./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 63816408f16166958351bc134d9ad3d8551cdcd0 ..................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:17:49,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:17:49,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:17:49,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:17:49,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:17:49,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:17:49,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:17:49,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:17:49,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:17:49,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:17:49,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:17:49,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:17:49,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:17:49,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:17:49,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:17:49,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:17:49,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:17:49,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:17:49,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:17:49,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:17:49,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:17:49,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:17:49,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:17:49,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:17:49,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:17:49,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:17:49,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:17:49,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:17:49,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:17:49,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:17:49,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:17:49,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:17:49,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:17:49,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:17:49,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:17:49,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:17:49,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:17:49,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:17:49,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:17:49,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:17:49,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:17:49,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:17:49,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:17:49,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:17:49,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:17:49,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:17:49,892 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:17:49,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:17:49,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:17:49,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:17:49,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:17:49,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:17:49,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:17:49,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:17:49,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:17:49,896 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:17:49,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:17:49,896 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:17:49,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:17:49,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:17:49,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:17:49,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:17:49,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:17:49,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:17:49,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:17:49,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:17:49,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:17:49,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:17:49,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:17:49,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:17:49,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:17:49,900 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63816408f16166958351bc134d9ad3d8551cdcd0 [2020-10-25 22:17:50,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:17:50,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:17:50,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:17:50,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:17:50,390 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:17:50,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2020-10-25 22:17:50,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63da5b121/82f471143d0745329cd9500ea759c864/FLAG1f5a46c43 [2020-10-25 22:17:51,104 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:17:51,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2020-10-25 22:17:51,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63da5b121/82f471143d0745329cd9500ea759c864/FLAG1f5a46c43 [2020-10-25 22:17:51,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63da5b121/82f471143d0745329cd9500ea759c864 [2020-10-25 22:17:51,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:17:51,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:17:51,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:17:51,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:17:51,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:17:51,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:17:51" (1/1) ... [2020-10-25 22:17:51,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af36053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51, skipping insertion in model container [2020-10-25 22:17:51,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:17:51" (1/1) ... [2020-10-25 22:17:51,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:17:51,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:17:51,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:17:51,784 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:17:51,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:17:51,821 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:17:51,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51 WrapperNode [2020-10-25 22:17:51,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:17:51,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:17:51,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:17:51,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:17:51,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51" (1/1) ... [2020-10-25 22:17:51,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51" (1/1) ... [2020-10-25 22:17:51,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:17:51,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:17:51,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:17:51,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:17:51,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51" (1/1) ... [2020-10-25 22:17:51,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51" (1/1) ... [2020-10-25 22:17:51,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51" (1/1) ... [2020-10-25 22:17:51,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51" (1/1) ... [2020-10-25 22:17:51,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51" (1/1) ... [2020-10-25 22:17:51,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51" (1/1) ... [2020-10-25 22:17:51,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51" (1/1) ... [2020-10-25 22:17:51,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:17:51,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:17:51,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:17:51,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:17:51,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:17:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:17:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:17:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:17:52,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:17:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:17:52,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:17:52,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:17:52,392 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-25 22:17:52,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:52 BoogieIcfgContainer [2020-10-25 22:17:52,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:17:52,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:17:52,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:17:52,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:17:52,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:17:51" (1/3) ... [2020-10-25 22:17:52,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cf7675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:17:52, skipping insertion in model container [2020-10-25 22:17:52,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:51" (2/3) ... [2020-10-25 22:17:52,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cf7675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:17:52, skipping insertion in model container [2020-10-25 22:17:52,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:52" (3/3) ... [2020-10-25 22:17:52,405 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2020-10-25 22:17:52,423 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:17:52,429 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:17:52,453 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:17:52,511 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:17:52,511 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:17:52,511 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:17:52,511 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:17:52,512 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:17:52,512 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:17:52,512 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:17:52,512 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:17:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-25 22:17:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:17:52,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:52,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:52,539 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:52,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:52,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1809706186, now seen corresponding path program 1 times [2020-10-25 22:17:52,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:52,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37635799] [2020-10-25 22:17:52,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:52,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37635799] [2020-10-25 22:17:52,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:17:52,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:17:52,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586265375] [2020-10-25 22:17:52,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:17:52,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:52,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:17:52,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:17:52,851 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-10-25 22:17:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:52,968 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2020-10-25 22:17:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:17:52,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-25 22:17:52,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:52,981 INFO L225 Difference]: With dead ends: 38 [2020-10-25 22:17:52,981 INFO L226 Difference]: Without dead ends: 14 [2020-10-25 22:17:52,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:17:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-25 22:17:53,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-10-25 22:17:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-25 22:17:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-25 22:17:53,025 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-10-25 22:17:53,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:53,027 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-25 22:17:53,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:17:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-25 22:17:53,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:17:53,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:53,028 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:53,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:17:53,029 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:53,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:53,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2069720216, now seen corresponding path program 1 times [2020-10-25 22:17:53,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:53,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284380915] [2020-10-25 22:17:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:53,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284380915] [2020-10-25 22:17:53,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210661430] [2020-10-25 22:17:53,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:17:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:53,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-25 22:17:53,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:17:53,393 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:17:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:53,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:17:53,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-25 22:17:53,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36053915] [2020-10-25 22:17:53,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 22:17:53,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:53,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 22:17:53,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:17:53,442 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2020-10-25 22:17:53,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:53,528 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-25 22:17:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 22:17:53,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-25 22:17:53,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:53,530 INFO L225 Difference]: With dead ends: 23 [2020-10-25 22:17:53,530 INFO L226 Difference]: Without dead ends: 19 [2020-10-25 22:17:53,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-25 22:17:53,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-25 22:17:53,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-10-25 22:17:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-25 22:17:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-25 22:17:53,537 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2020-10-25 22:17:53,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:53,537 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-25 22:17:53,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 22:17:53,537 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-25 22:17:53,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 22:17:53,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:53,538 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:53,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-25 22:17:53,753 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:53,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:53,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1134799514, now seen corresponding path program 2 times [2020-10-25 22:17:53,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:53,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579979218] [2020-10-25 22:17:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-25 22:17:53,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579979218] [2020-10-25 22:17:53,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801211078] [2020-10-25 22:17:53,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:17:53,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-25 22:17:53,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:17:53,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-25 22:17:53,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:17:53,982 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:17:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-25 22:17:54,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:17:54,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-25 22:17:54,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654172658] [2020-10-25 22:17:54,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 22:17:54,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:54,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 22:17:54,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:17:54,006 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-10-25 22:17:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:54,060 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-25 22:17:54,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:17:54,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-25 22:17:54,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:54,062 INFO L225 Difference]: With dead ends: 16 [2020-10-25 22:17:54,062 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:17:54,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-25 22:17:54,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:17:54,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:17:54,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:17:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:17:54,064 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-25 22:17:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:54,064 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:17:54,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 22:17:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:17:54,065 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:17:54,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:17:54,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:17:54,482 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:17:54,482 INFO L274 CegarLoopResult]: For program point L29-2(lines 29 33) no Hoare annotation was computed. [2020-10-25 22:17:54,482 INFO L270 CegarLoopResult]: At program point L29-3(lines 29 33) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base)) (.cse1 (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base)) (.cse2 (<= ULTIMATE.start_glob2_~pathlim.offset ~tmp~0.offset))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 .cse2) (and (= ULTIMATE.start_glob2_~p~0.offset 0) (<= 4 ~tmp~0.offset) .cse0 .cse1 .cse2))) [2020-10-25 22:17:54,483 INFO L274 CegarLoopResult]: For program point L29-4(lines 29 33) no Hoare annotation was computed. [2020-10-25 22:17:54,483 INFO L270 CegarLoopResult]: At program point L48(lines 38 49) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (and (= ULTIMATE.start_glob2_~p~0.offset 0) (<= 4 ~tmp~0.offset) (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base))) [2020-10-25 22:17:54,483 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-10-25 22:17:54,483 INFO L270 CegarLoopResult]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base) (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base) (<= ULTIMATE.start_glob2_~pathlim.offset ~tmp~0.offset)) [2020-10-25 22:17:54,483 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:17:54,483 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:17:54,483 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:17:54,484 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-25 22:17:54,484 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-10-25 22:17:54,484 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-25 22:17:54,484 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-25 22:17:54,484 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-25 22:17:54,484 INFO L270 CegarLoopResult]: At program point L35(lines 25 36) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (and (= ULTIMATE.start_glob2_~p~0.offset 0) (<= 4 ~tmp~0.offset) (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base))) [2020-10-25 22:17:54,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:17:54 BoogieIcfgContainer [2020-10-25 22:17:54,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:17:54,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:17:54,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:17:54,511 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:17:54,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:52" (3/4) ... [2020-10-25 22:17:54,516 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:17:54,527 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-25 22:17:54,527 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-25 22:17:54,528 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:17:54,528 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:17:54,577 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:17:54,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:17:54,579 INFO L168 Benchmark]: Toolchain (without parser) took 3106.66 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 20.5 MB in the beginning and 46.5 MB in the end (delta: -26.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:54,580 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 35.7 MB. Free memory is still 19.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:54,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.13 ms. Allocated memory is still 44.0 MB. Free memory was 29.1 MB in the beginning and 19.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:54,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.33 ms. Allocated memory is still 44.0 MB. Free memory was 19.8 MB in the beginning and 28.4 MB in the end (delta: -8.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:54,582 INFO L168 Benchmark]: Boogie Preprocessor took 56.89 ms. Allocated memory is still 44.0 MB. Free memory was 28.4 MB in the beginning and 27.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:54,583 INFO L168 Benchmark]: RCFGBuilder took 458.19 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 34.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:54,584 INFO L168 Benchmark]: TraceAbstraction took 2110.07 ms. Allocated memory is still 54.5 MB. Free memory was 34.3 MB in the beginning and 18.1 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:54,585 INFO L168 Benchmark]: Witness Printer took 66.73 ms. Allocated memory is still 67.1 MB. Free memory was 49.1 MB in the beginning and 46.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:54,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 35.7 MB. Free memory is still 19.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 319.13 ms. Allocated memory is still 44.0 MB. Free memory was 29.1 MB in the beginning and 19.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.33 ms. Allocated memory is still 44.0 MB. Free memory was 19.8 MB in the beginning and 28.4 MB in the end (delta: -8.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.89 ms. Allocated memory is still 44.0 MB. Free memory was 28.4 MB in the beginning and 27.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 458.19 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 34.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2110.07 ms. Allocated memory is still 54.5 MB. Free memory was 34.3 MB in the beginning and 18.1 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Witness Printer took 66.73 ms. Allocated memory is still 67.1 MB. Free memory was 49.1 MB in the beginning and 46.5 MB in the end (delta: 2.6 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: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((1 <= cond && pathlim == tmp) && tmp == p) && pathlim <= tmp) || ((((p == 0 && 4 <= tmp) && pathlim == tmp) && tmp == p) && pathlim <= tmp) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: !(0 == cond) || ((p == 0 && 4 <= tmp) && tmp == p) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((1 <= cond && pathlim == tmp) && tmp == p) && pathlim <= tmp - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: !(0 == cond) || ((p == 0 && 4 <= tmp) && tmp == p) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 32 SDslu, 41 SDs, 0 SdLazy, 39 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 73 HoareAnnotationTreeSize, 4 FomulaSimplifications, 118 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 59 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 3132 SizeOfPredicates, 26 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 12/20 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...