./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test11.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff22ef1f1636739616d2fc1a8366a8c51606f555 ................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 09:11:04,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:11:04,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:11:04,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:11:04,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:11:04,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:11:04,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:11:04,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:11:04,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:11:04,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:11:04,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:11:04,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:11:04,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:11:04,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:11:04,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:11:04,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:11:04,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:11:04,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:11:04,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:11:04,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:11:04,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:11:04,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:11:04,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:11:04,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:11:04,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:11:04,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:11:04,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:11:04,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:11:04,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:11:04,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:11:04,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:11:04,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:11:04,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:11:04,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:11:04,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:11:04,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:11:04,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:11:04,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:11:04,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:11:04,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:11:04,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:11:04,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 09:11:04,795 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:11:04,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:11:04,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:11:04,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:11:04,796 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:11:04,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:11:04,796 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:11:04,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:11:04,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:11:04,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:11:04,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 09:11:04,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:11:04,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 09:11:04,797 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:11:04,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:11:04,797 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:11:04,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 09:11:04,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:11:04,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:11:04,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:11:04,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 09:11:04,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:11:04,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:11:04,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:11:04,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 09:11:04,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 09:11:04,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 09:11:04,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 09:11:04,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d291274f-1924-42a6-8634-c9f9316c237a/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(__VERIFIER_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 -> ff22ef1f1636739616d2fc1a8366a8c51606f555 [2019-11-20 09:11:04,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:11:04,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:11:04,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:11:04,962 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:11:04,962 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:11:04,963 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test11.c [2019-11-20 09:11:05,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer/data/aee978920/5d6ba8770c6f4b7dbd5d7df70172e0bf/FLAG8c73db8f6 [2019-11-20 09:11:05,400 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:11:05,401 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/sv-benchmarks/c/ldv-regression/test11.c [2019-11-20 09:11:05,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer/data/aee978920/5d6ba8770c6f4b7dbd5d7df70172e0bf/FLAG8c73db8f6 [2019-11-20 09:11:05,416 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer/data/aee978920/5d6ba8770c6f4b7dbd5d7df70172e0bf [2019-11-20 09:11:05,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:11:05,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:11:05,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:11:05,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:11:05,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:11:05,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:11:05" (1/1) ... [2019-11-20 09:11:05,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f1c9fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05, skipping insertion in model container [2019-11-20 09:11:05,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:11:05" (1/1) ... [2019-11-20 09:11:05,432 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:11:05,450 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:11:05,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:11:05,727 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:11:05,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:11:05,757 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:11:05,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05 WrapperNode [2019-11-20 09:11:05,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:11:05,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:11:05,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:11:05,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:11:05,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05" (1/1) ... [2019-11-20 09:11:05,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05" (1/1) ... [2019-11-20 09:11:05,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:11:05,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:11:05,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:11:05,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:11:05,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05" (1/1) ... [2019-11-20 09:11:05,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05" (1/1) ... [2019-11-20 09:11:05,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05" (1/1) ... [2019-11-20 09:11:05,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05" (1/1) ... [2019-11-20 09:11:05,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05" (1/1) ... [2019-11-20 09:11:05,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05" (1/1) ... [2019-11-20 09:11:05,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05" (1/1) ... [2019-11-20 09:11:05,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:11:05,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:11:05,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:11:05,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:11:05,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/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 [2019-11-20 09:11:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 09:11:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:11:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:11:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 09:11:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-20 09:11:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 09:11:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 09:11:06,194 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:11:06,195 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 09:11:06,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:11:06 BoogieIcfgContainer [2019-11-20 09:11:06,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:11:06,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 09:11:06,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 09:11:06,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 09:11:06,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:11:05" (1/3) ... [2019-11-20 09:11:06,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be663d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:11:06, skipping insertion in model container [2019-11-20 09:11:06,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:11:05" (2/3) ... [2019-11-20 09:11:06,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be663d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:11:06, skipping insertion in model container [2019-11-20 09:11:06,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:11:06" (3/3) ... [2019-11-20 09:11:06,207 INFO L109 eAbstractionObserver]: Analyzing ICFG test11.c [2019-11-20 09:11:06,215 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 09:11:06,221 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 09:11:06,231 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 09:11:06,253 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 09:11:06,253 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 09:11:06,253 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 09:11:06,253 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:11:06,253 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:11:06,254 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 09:11:06,254 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:11:06,254 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 09:11:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-20 09:11:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 09:11:06,276 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:11:06,277 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:11:06,277 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:11:06,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:11:06,284 INFO L82 PathProgramCache]: Analyzing trace with hash 119352371, now seen corresponding path program 1 times [2019-11-20 09:11:06,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:11:06,293 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411614767] [2019-11-20 09:11:06,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:11:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:11:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:11:06,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411614767] [2019-11-20 09:11:06,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:11:06,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 09:11:06,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497091140] [2019-11-20 09:11:06,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 09:11:06,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:11:06,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 09:11:06,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 09:11:06,470 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-20 09:11:06,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:11:06,524 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2019-11-20 09:11:06,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 09:11:06,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-20 09:11:06,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:11:06,534 INFO L225 Difference]: With dead ends: 22 [2019-11-20 09:11:06,534 INFO L226 Difference]: Without dead ends: 12 [2019-11-20 09:11:06,537 INFO L630 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 [2019-11-20 09:11:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-20 09:11:06,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-20 09:11:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 09:11:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-20 09:11:06,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2019-11-20 09:11:06,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:11:06,562 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-20 09:11:06,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 09:11:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-20 09:11:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 09:11:06,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:11:06,563 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:11:06,563 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:11:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:11:06,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1264891367, now seen corresponding path program 1 times [2019-11-20 09:11:06,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:11:06,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335510607] [2019-11-20 09:11:06,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:11:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:11:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:11:06,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335510607] [2019-11-20 09:11:06,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:11:06,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 09:11:06,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328397633] [2019-11-20 09:11:06,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 09:11:06,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:11:06,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 09:11:06,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 09:11:06,714 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 6 states. [2019-11-20 09:11:06,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:11:06,775 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-11-20 09:11:06,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 09:11:06,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-20 09:11:06,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:11:06,776 INFO L225 Difference]: With dead ends: 14 [2019-11-20 09:11:06,777 INFO L226 Difference]: Without dead ends: 12 [2019-11-20 09:11:06,778 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 09:11:06,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-20 09:11:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-20 09:11:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 09:11:06,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-20 09:11:06,781 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2019-11-20 09:11:06,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:11:06,781 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-20 09:11:06,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 09:11:06,782 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-11-20 09:11:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 09:11:06,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:11:06,782 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:11:06,782 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:11:06,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:11:06,783 INFO L82 PathProgramCache]: Analyzing trace with hash -556924879, now seen corresponding path program 1 times [2019-11-20 09:11:06,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:11:06,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94247983] [2019-11-20 09:11:06,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:11:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:11:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:11:06,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94247983] [2019-11-20 09:11:06,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:11:06,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 09:11:06,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590971387] [2019-11-20 09:11:06,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 09:11:06,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:11:06,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 09:11:06,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 09:11:06,854 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 4 states. [2019-11-20 09:11:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:11:06,878 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-20 09:11:06,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 09:11:06,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 09:11:06,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:11:06,879 INFO L225 Difference]: With dead ends: 12 [2019-11-20 09:11:06,879 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 09:11:06,880 INFO L630 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 [2019-11-20 09:11:06,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 09:11:06,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 09:11:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 09:11:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 09:11:06,881 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-20 09:11:06,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:11:06,881 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 09:11:06,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 09:11:06,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 09:11:06,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 09:11:06,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 09:11:06,909 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 09:11:06,909 INFO L440 ceAbstractionStarter]: At program point L31(lines 12 32) the Hoare annotation is: (not (= 0 ULTIMATE.start_main_~pc~0.base)) [2019-11-20 09:11:06,909 INFO L440 ceAbstractionStarter]: At program point L25(lines 12 32) the Hoare annotation is: false [2019-11-20 09:11:06,910 INFO L444 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-20 09:11:06,910 INFO L444 ceAbstractionStarter]: For program point L19-2(line 19) no Hoare annotation was computed. [2019-11-20 09:11:06,910 INFO L444 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2019-11-20 09:11:06,910 INFO L444 ceAbstractionStarter]: For program point L9-2(line 9) no Hoare annotation was computed. [2019-11-20 09:11:06,910 INFO L440 ceAbstractionStarter]: At program point L9-3(lines 7 10) the Hoare annotation is: (and (not (= 0 ULTIMATE.start_main_~pc~0.base)) (= ULTIMATE.start_main_~pc~0.offset |ULTIMATE.start_main_~#c~0.offset|) (= ULTIMATE.start_main_~pc~0.base |ULTIMATE.start_main_~#c~0.base|)) [2019-11-20 09:11:06,910 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-20 09:11:06,910 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 09:11:06,911 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 09:11:06,911 INFO L444 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-11-20 09:11:06,911 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2019-11-20 09:11:06,911 INFO L444 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2019-11-20 09:11:06,911 INFO L444 ceAbstractionStarter]: For program point L18-2(lines 18 21) no Hoare annotation was computed. [2019-11-20 09:11:06,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:11:06 BoogieIcfgContainer [2019-11-20 09:11:06,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 09:11:06,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 09:11:06,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 09:11:06,930 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 09:11:06,930 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:11:06" (3/4) ... [2019-11-20 09:11:06,934 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 09:11:06,942 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-20 09:11:06,943 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 09:11:06,943 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 09:11:06,992 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d291274f-1924-42a6-8634-c9f9316c237a/bin/uautomizer/witness.graphml [2019-11-20 09:11:06,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 09:11:06,994 INFO L168 Benchmark]: Toolchain (without parser) took 1574.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -116.4 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. [2019-11-20 09:11:06,994 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:11:06,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -199.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-20 09:11:06,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:11:06,995 INFO L168 Benchmark]: Boogie Preprocessor took 43.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:11:06,996 INFO L168 Benchmark]: RCFGBuilder took 345.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-20 09:11:06,996 INFO L168 Benchmark]: TraceAbstraction took 729.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. [2019-11-20 09:11:06,997 INFO L168 Benchmark]: Witness Printer took 65.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. [2019-11-20 09:11:06,999 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 338.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -199.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 345.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 729.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. * Witness Printer took 65.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: 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: 12]: Loop Invariant Derived loop invariant: !(0 == pc) - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (!(0 == pc) && pc == c) && pc == c - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 26 SDslu, 39 SDs, 0 SdLazy, 24 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 4 NumberOfFragments, 16 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 974 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...