./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a6bc1adbcafb13db44c5d4b4826990150e2f336 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:05:41,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:05:41,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:05:41,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:05:41,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:05:41,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:05:41,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:05:41,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:05:41,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:05:41,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:05:41,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:05:41,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:05:41,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:05:41,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:05:41,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:05:41,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:05:41,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:05:41,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:05:41,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:05:41,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:05:41,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:05:41,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:05:41,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:05:41,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:05:41,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:05:41,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:05:41,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:05:41,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:05:41,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:05:41,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:05:41,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:05:41,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:05:41,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:05:41,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:05:41,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:05:41,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:05:41,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:05:41,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:05:41,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:05:41,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:05:41,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:05:41,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:05:41,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:05:41,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:05:41,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:05:41,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:05:41,782 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:05:41,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:05:41,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:05:41,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:05:41,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:05:41,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:05:41,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:05:41,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:05:41,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:05:41,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:05:41,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:05:41,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:05:41,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:05:41,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:05:41,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:05:41,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:05:41,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:05:41,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:05:41,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:05:41,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:05:41,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:05:41,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:05:41,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:05:41,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:05:41,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:05:41,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6bc1adbcafb13db44c5d4b4826990150e2f336 [2020-11-30 00:05:42,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:05:42,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:05:42,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:05:42,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:05:42,308 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:05:42,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_6.c [2020-11-30 00:05:42,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/data/07db73c09/dbac6b201e1d40b28497743773f50855/FLAGd87ebf530 [2020-11-30 00:05:43,248 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:05:43,254 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/sv-benchmarks/c/locks/test_locks_6.c [2020-11-30 00:05:43,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/data/07db73c09/dbac6b201e1d40b28497743773f50855/FLAGd87ebf530 [2020-11-30 00:05:43,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/data/07db73c09/dbac6b201e1d40b28497743773f50855 [2020-11-30 00:05:43,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:05:43,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:05:43,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:05:43,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:05:43,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:05:43,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:05:43" (1/1) ... [2020-11-30 00:05:43,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f701b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43, skipping insertion in model container [2020-11-30 00:05:43,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:05:43" (1/1) ... [2020-11-30 00:05:43,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:05:43,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:05:43,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:05:43,937 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:05:43,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:05:43,986 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:05:43,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43 WrapperNode [2020-11-30 00:05:43,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:05:43,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:05:43,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:05:43,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:05:44,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43" (1/1) ... [2020-11-30 00:05:44,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43" (1/1) ... [2020-11-30 00:05:44,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:05:44,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:05:44,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:05:44,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:05:44,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43" (1/1) ... [2020-11-30 00:05:44,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43" (1/1) ... [2020-11-30 00:05:44,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43" (1/1) ... [2020-11-30 00:05:44,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43" (1/1) ... [2020-11-30 00:05:44,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43" (1/1) ... [2020-11-30 00:05:44,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43" (1/1) ... [2020-11-30 00:05:44,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43" (1/1) ... [2020-11-30 00:05:44,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:05:44,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:05:44,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:05:44,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:05:44,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:05:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:05:44,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:05:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:05:44,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:05:44,872 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:05:44,873 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-30 00:05:44,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:05:44 BoogieIcfgContainer [2020-11-30 00:05:44,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:05:44,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:05:44,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:05:44,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:05:44,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:05:43" (1/3) ... [2020-11-30 00:05:44,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6606ed33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:05:44, skipping insertion in model container [2020-11-30 00:05:44,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:05:43" (2/3) ... [2020-11-30 00:05:44,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6606ed33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:05:44, skipping insertion in model container [2020-11-30 00:05:44,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:05:44" (3/3) ... [2020-11-30 00:05:44,893 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-11-30 00:05:44,908 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:05:44,914 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:05:44,931 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:05:44,976 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:05:44,976 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:05:44,977 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:05:44,977 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:05:44,977 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:05:44,977 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:05:44,977 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:05:44,978 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:05:45,005 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 00:05:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:05:45,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:45,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:45,015 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:45,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:45,024 INFO L82 PathProgramCache]: Analyzing trace with hash -721193823, now seen corresponding path program 1 times [2020-11-30 00:05:45,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:45,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029146260] [2020-11-30 00:05:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:45,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029146260] [2020-11-30 00:05:45,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:45,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:45,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782408902] [2020-11-30 00:05:45,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:45,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:45,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:45,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:45,424 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-11-30 00:05:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:45,500 INFO L93 Difference]: Finished difference Result 60 states and 98 transitions. [2020-11-30 00:05:45,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:45,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-30 00:05:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:45,531 INFO L225 Difference]: With dead ends: 60 [2020-11-30 00:05:45,540 INFO L226 Difference]: Without dead ends: 45 [2020-11-30 00:05:45,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-30 00:05:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2020-11-30 00:05:45,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:05:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2020-11-30 00:05:45,605 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 13 [2020-11-30 00:05:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:45,606 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2020-11-30 00:05:45,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:45,607 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2020-11-30 00:05:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:05:45,611 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:45,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:45,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:05:45,612 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:45,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:45,616 INFO L82 PathProgramCache]: Analyzing trace with hash -41135453, now seen corresponding path program 1 times [2020-11-30 00:05:45,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:45,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652903140] [2020-11-30 00:05:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:45,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652903140] [2020-11-30 00:05:45,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:45,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:45,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327358943] [2020-11-30 00:05:45,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:45,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:45,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:45,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:45,739 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 3 states. [2020-11-30 00:05:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:45,786 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2020-11-30 00:05:45,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:45,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-30 00:05:45,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:45,790 INFO L225 Difference]: With dead ends: 74 [2020-11-30 00:05:45,791 INFO L226 Difference]: Without dead ends: 45 [2020-11-30 00:05:45,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:45,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-30 00:05:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-11-30 00:05:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 00:05:45,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 74 transitions. [2020-11-30 00:05:45,812 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 74 transitions. Word has length 13 [2020-11-30 00:05:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:45,813 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 74 transitions. [2020-11-30 00:05:45,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 74 transitions. [2020-11-30 00:05:45,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:05:45,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:45,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:45,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:05:45,818 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:45,819 INFO L82 PathProgramCache]: Analyzing trace with hash -881957389, now seen corresponding path program 1 times [2020-11-30 00:05:45,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:45,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449287142] [2020-11-30 00:05:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:45,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449287142] [2020-11-30 00:05:45,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:45,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:45,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328008184] [2020-11-30 00:05:45,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:45,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:45,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:45,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:45,943 INFO L87 Difference]: Start difference. First operand 43 states and 74 transitions. Second operand 3 states. [2020-11-30 00:05:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:45,971 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2020-11-30 00:05:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:45,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-30 00:05:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:45,975 INFO L225 Difference]: With dead ends: 69 [2020-11-30 00:05:45,975 INFO L226 Difference]: Without dead ends: 48 [2020-11-30 00:05:45,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-30 00:05:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-11-30 00:05:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-30 00:05:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 76 transitions. [2020-11-30 00:05:45,992 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 76 transitions. Word has length 14 [2020-11-30 00:05:45,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:45,993 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 76 transitions. [2020-11-30 00:05:45,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 76 transitions. [2020-11-30 00:05:45,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:05:45,994 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:45,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:45,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:05:45,995 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:45,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:45,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1274984399, now seen corresponding path program 1 times [2020-11-30 00:05:45,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:45,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324413940] [2020-11-30 00:05:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:46,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324413940] [2020-11-30 00:05:46,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:46,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:46,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514684023] [2020-11-30 00:05:46,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:46,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:46,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:46,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,044 INFO L87 Difference]: Start difference. First operand 46 states and 76 transitions. Second operand 3 states. [2020-11-30 00:05:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:46,086 INFO L93 Difference]: Finished difference Result 85 states and 141 transitions. [2020-11-30 00:05:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:46,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-30 00:05:46,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:46,090 INFO L225 Difference]: With dead ends: 85 [2020-11-30 00:05:46,090 INFO L226 Difference]: Without dead ends: 83 [2020-11-30 00:05:46,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-30 00:05:46,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2020-11-30 00:05:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-30 00:05:46,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 101 transitions. [2020-11-30 00:05:46,103 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 101 transitions. Word has length 14 [2020-11-30 00:05:46,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:46,104 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 101 transitions. [2020-11-30 00:05:46,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:46,105 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 101 transitions. [2020-11-30 00:05:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:05:46,106 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:46,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:46,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:05:46,107 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:46,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:46,108 INFO L82 PathProgramCache]: Analyzing trace with hash -594926029, now seen corresponding path program 1 times [2020-11-30 00:05:46,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:46,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665763196] [2020-11-30 00:05:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:46,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665763196] [2020-11-30 00:05:46,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:46,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:46,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846263666] [2020-11-30 00:05:46,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:46,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:46,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:46,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,168 INFO L87 Difference]: Start difference. First operand 61 states and 101 transitions. Second operand 3 states. [2020-11-30 00:05:46,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:46,212 INFO L93 Difference]: Finished difference Result 141 states and 235 transitions. [2020-11-30 00:05:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:46,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-30 00:05:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:46,218 INFO L225 Difference]: With dead ends: 141 [2020-11-30 00:05:46,218 INFO L226 Difference]: Without dead ends: 85 [2020-11-30 00:05:46,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-30 00:05:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-11-30 00:05:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-30 00:05:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 135 transitions. [2020-11-30 00:05:46,234 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 135 transitions. Word has length 14 [2020-11-30 00:05:46,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:46,234 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 135 transitions. [2020-11-30 00:05:46,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 135 transitions. [2020-11-30 00:05:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:05:46,236 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:46,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:46,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:05:46,237 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:46,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:46,238 INFO L82 PathProgramCache]: Analyzing trace with hash -869595720, now seen corresponding path program 1 times [2020-11-30 00:05:46,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:46,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597151363] [2020-11-30 00:05:46,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:46,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597151363] [2020-11-30 00:05:46,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:46,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:46,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937038982] [2020-11-30 00:05:46,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:46,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:46,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:46,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,303 INFO L87 Difference]: Start difference. First operand 83 states and 135 transitions. Second operand 3 states. [2020-11-30 00:05:46,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:46,359 INFO L93 Difference]: Finished difference Result 126 states and 202 transitions. [2020-11-30 00:05:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:46,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-30 00:05:46,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:46,361 INFO L225 Difference]: With dead ends: 126 [2020-11-30 00:05:46,361 INFO L226 Difference]: Without dead ends: 87 [2020-11-30 00:05:46,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-30 00:05:46,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-11-30 00:05:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-30 00:05:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 135 transitions. [2020-11-30 00:05:46,374 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 135 transitions. Word has length 15 [2020-11-30 00:05:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:46,374 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 135 transitions. [2020-11-30 00:05:46,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 135 transitions. [2020-11-30 00:05:46,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:05:46,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:46,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:46,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:05:46,377 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:46,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:46,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1262622730, now seen corresponding path program 1 times [2020-11-30 00:05:46,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:46,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647765915] [2020-11-30 00:05:46,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:46,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647765915] [2020-11-30 00:05:46,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:46,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:46,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798867627] [2020-11-30 00:05:46,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:46,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:46,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:46,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,446 INFO L87 Difference]: Start difference. First operand 85 states and 135 transitions. Second operand 3 states. [2020-11-30 00:05:46,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:46,492 INFO L93 Difference]: Finished difference Result 237 states and 377 transitions. [2020-11-30 00:05:46,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:46,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-30 00:05:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:46,495 INFO L225 Difference]: With dead ends: 237 [2020-11-30 00:05:46,495 INFO L226 Difference]: Without dead ends: 159 [2020-11-30 00:05:46,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-30 00:05:46,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-11-30 00:05:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-30 00:05:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 243 transitions. [2020-11-30 00:05:46,521 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 243 transitions. Word has length 15 [2020-11-30 00:05:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:46,521 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 243 transitions. [2020-11-30 00:05:46,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 243 transitions. [2020-11-30 00:05:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:05:46,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:46,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:46,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:05:46,525 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:46,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:46,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1942681100, now seen corresponding path program 1 times [2020-11-30 00:05:46,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:46,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185699060] [2020-11-30 00:05:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:46,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185699060] [2020-11-30 00:05:46,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:46,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:46,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144692915] [2020-11-30 00:05:46,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:46,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:46,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:46,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,582 INFO L87 Difference]: Start difference. First operand 157 states and 243 transitions. Second operand 3 states. [2020-11-30 00:05:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:46,612 INFO L93 Difference]: Finished difference Result 193 states and 301 transitions. [2020-11-30 00:05:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:46,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-30 00:05:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:46,615 INFO L225 Difference]: With dead ends: 193 [2020-11-30 00:05:46,615 INFO L226 Difference]: Without dead ends: 191 [2020-11-30 00:05:46,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-30 00:05:46,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-11-30 00:05:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-30 00:05:46,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 239 transitions. [2020-11-30 00:05:46,633 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 239 transitions. Word has length 15 [2020-11-30 00:05:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:46,634 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 239 transitions. [2020-11-30 00:05:46,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 239 transitions. [2020-11-30 00:05:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:05:46,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:46,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:46,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:05:46,636 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:46,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:46,637 INFO L82 PathProgramCache]: Analyzing trace with hash -486383640, now seen corresponding path program 1 times [2020-11-30 00:05:46,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:46,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359959012] [2020-11-30 00:05:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:46,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359959012] [2020-11-30 00:05:46,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:46,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:46,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938922217] [2020-11-30 00:05:46,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:46,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:46,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:46,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,684 INFO L87 Difference]: Start difference. First operand 157 states and 239 transitions. Second operand 3 states. [2020-11-30 00:05:46,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:46,753 INFO L93 Difference]: Finished difference Result 277 states and 425 transitions. [2020-11-30 00:05:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:46,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-30 00:05:46,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:46,757 INFO L225 Difference]: With dead ends: 277 [2020-11-30 00:05:46,758 INFO L226 Difference]: Without dead ends: 275 [2020-11-30 00:05:46,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-11-30 00:05:46,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 225. [2020-11-30 00:05:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-11-30 00:05:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2020-11-30 00:05:46,789 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 16 [2020-11-30 00:05:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:46,790 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2020-11-30 00:05:46,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2020-11-30 00:05:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:05:46,793 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:46,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:46,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:05:46,794 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:46,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:46,795 INFO L82 PathProgramCache]: Analyzing trace with hash 193674730, now seen corresponding path program 1 times [2020-11-30 00:05:46,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:46,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236843182] [2020-11-30 00:05:46,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:46,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236843182] [2020-11-30 00:05:46,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:46,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:46,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905076637] [2020-11-30 00:05:46,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:46,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:46,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:46,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,862 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 3 states. [2020-11-30 00:05:46,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:46,926 INFO L93 Difference]: Finished difference Result 517 states and 769 transitions. [2020-11-30 00:05:46,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:46,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-30 00:05:46,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:46,930 INFO L225 Difference]: With dead ends: 517 [2020-11-30 00:05:46,930 INFO L226 Difference]: Without dead ends: 299 [2020-11-30 00:05:46,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:46,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-30 00:05:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2020-11-30 00:05:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-11-30 00:05:46,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2020-11-30 00:05:46,955 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 16 [2020-11-30 00:05:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:46,955 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2020-11-30 00:05:46,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2020-11-30 00:05:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:05:46,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:46,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:46,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:05:46,959 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:46,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:46,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2102192011, now seen corresponding path program 1 times [2020-11-30 00:05:46,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:46,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196434327] [2020-11-30 00:05:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:47,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196434327] [2020-11-30 00:05:47,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:47,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:47,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129647562] [2020-11-30 00:05:47,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:47,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:47,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:47,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,022 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand 3 states. [2020-11-30 00:05:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:47,085 INFO L93 Difference]: Finished difference Result 453 states and 649 transitions. [2020-11-30 00:05:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:47,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 00:05:47,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:47,088 INFO L225 Difference]: With dead ends: 453 [2020-11-30 00:05:47,088 INFO L226 Difference]: Without dead ends: 311 [2020-11-30 00:05:47,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-11-30 00:05:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2020-11-30 00:05:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-11-30 00:05:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 435 transitions. [2020-11-30 00:05:47,107 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 435 transitions. Word has length 17 [2020-11-30 00:05:47,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:47,108 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 435 transitions. [2020-11-30 00:05:47,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 435 transitions. [2020-11-30 00:05:47,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:05:47,110 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:47,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:47,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 00:05:47,111 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:47,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1709165001, now seen corresponding path program 1 times [2020-11-30 00:05:47,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:47,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128494947] [2020-11-30 00:05:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:47,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:47,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128494947] [2020-11-30 00:05:47,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:47,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:47,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430895047] [2020-11-30 00:05:47,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:47,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:47,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:47,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,149 INFO L87 Difference]: Start difference. First operand 309 states and 435 transitions. Second operand 3 states. [2020-11-30 00:05:47,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:47,222 INFO L93 Difference]: Finished difference Result 521 states and 733 transitions. [2020-11-30 00:05:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:47,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 00:05:47,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:47,227 INFO L225 Difference]: With dead ends: 521 [2020-11-30 00:05:47,228 INFO L226 Difference]: Without dead ends: 519 [2020-11-30 00:05:47,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-11-30 00:05:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 453. [2020-11-30 00:05:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-11-30 00:05:47,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 619 transitions. [2020-11-30 00:05:47,253 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 619 transitions. Word has length 17 [2020-11-30 00:05:47,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:47,254 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 619 transitions. [2020-11-30 00:05:47,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:47,254 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 619 transitions. [2020-11-30 00:05:47,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:05:47,272 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:47,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:47,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 00:05:47,273 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:47,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:47,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1905743925, now seen corresponding path program 1 times [2020-11-30 00:05:47,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:47,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556178541] [2020-11-30 00:05:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:47,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556178541] [2020-11-30 00:05:47,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:47,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:47,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496033153] [2020-11-30 00:05:47,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:47,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:47,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:47,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,348 INFO L87 Difference]: Start difference. First operand 453 states and 619 transitions. Second operand 3 states. [2020-11-30 00:05:47,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:47,392 INFO L93 Difference]: Finished difference Result 1017 states and 1373 transitions. [2020-11-30 00:05:47,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:47,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 00:05:47,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:47,401 INFO L225 Difference]: With dead ends: 1017 [2020-11-30 00:05:47,401 INFO L226 Difference]: Without dead ends: 583 [2020-11-30 00:05:47,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-11-30 00:05:47,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2020-11-30 00:05:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-11-30 00:05:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 755 transitions. [2020-11-30 00:05:47,450 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 755 transitions. Word has length 17 [2020-11-30 00:05:47,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:47,450 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 755 transitions. [2020-11-30 00:05:47,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 755 transitions. [2020-11-30 00:05:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:05:47,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:47,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:47,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 00:05:47,453 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:47,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:47,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1444723487, now seen corresponding path program 1 times [2020-11-30 00:05:47,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:47,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699646454] [2020-11-30 00:05:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:47,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699646454] [2020-11-30 00:05:47,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:47,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:47,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245700142] [2020-11-30 00:05:47,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:47,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:47,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:47,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,557 INFO L87 Difference]: Start difference. First operand 581 states and 755 transitions. Second operand 3 states. [2020-11-30 00:05:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:47,602 INFO L93 Difference]: Finished difference Result 873 states and 1125 transitions. [2020-11-30 00:05:47,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:47,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-30 00:05:47,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:47,609 INFO L225 Difference]: With dead ends: 873 [2020-11-30 00:05:47,609 INFO L226 Difference]: Without dead ends: 599 [2020-11-30 00:05:47,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-11-30 00:05:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-11-30 00:05:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-11-30 00:05:47,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 755 transitions. [2020-11-30 00:05:47,643 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 755 transitions. Word has length 18 [2020-11-30 00:05:47,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:47,646 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 755 transitions. [2020-11-30 00:05:47,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:47,647 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 755 transitions. [2020-11-30 00:05:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:05:47,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:47,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:47,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 00:05:47,649 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:47,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:47,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1051696477, now seen corresponding path program 1 times [2020-11-30 00:05:47,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:47,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497614851] [2020-11-30 00:05:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:47,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497614851] [2020-11-30 00:05:47,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:47,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:47,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368372048] [2020-11-30 00:05:47,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:47,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:47,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:47,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,725 INFO L87 Difference]: Start difference. First operand 597 states and 755 transitions. Second operand 3 states. [2020-11-30 00:05:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:47,768 INFO L93 Difference]: Finished difference Result 967 states and 1204 transitions. [2020-11-30 00:05:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:47,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-30 00:05:47,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:47,776 INFO L225 Difference]: With dead ends: 967 [2020-11-30 00:05:47,776 INFO L226 Difference]: Without dead ends: 965 [2020-11-30 00:05:47,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-11-30 00:05:47,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 901. [2020-11-30 00:05:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-11-30 00:05:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1107 transitions. [2020-11-30 00:05:47,819 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1107 transitions. Word has length 18 [2020-11-30 00:05:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:47,820 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1107 transitions. [2020-11-30 00:05:47,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1107 transitions. [2020-11-30 00:05:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:05:47,824 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:05:47,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:05:47,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 00:05:47,825 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:05:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:05:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1731754847, now seen corresponding path program 1 times [2020-11-30 00:05:47,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:05:47,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361139500] [2020-11-30 00:05:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:05:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:05:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:05:47,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361139500] [2020-11-30 00:05:47,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:05:47,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:05:47,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382394666] [2020-11-30 00:05:47,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:05:47,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:05:47,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:05:47,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,891 INFO L87 Difference]: Start difference. First operand 901 states and 1107 transitions. Second operand 3 states. [2020-11-30 00:05:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:05:47,948 INFO L93 Difference]: Finished difference Result 1989 states and 2387 transitions. [2020-11-30 00:05:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:05:47,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-30 00:05:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:05:47,950 INFO L225 Difference]: With dead ends: 1989 [2020-11-30 00:05:47,950 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:05:47,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:05:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:05:47,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:05:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:05:47,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:05:47,954 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-30 00:05:47,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:05:47,954 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:05:47,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:05:47,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:05:47,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:05:47,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-30 00:05:47,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:05:47,983 INFO L274 CegarLoopResult]: For program point L60-1(lines 29 104) no Hoare annotation was computed. [2020-11-30 00:05:47,983 INFO L274 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-11-30 00:05:47,983 INFO L274 CegarLoopResult]: For program point L52-1(lines 29 104) no Hoare annotation was computed. [2020-11-30 00:05:47,984 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 00:05:47,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:05:47,984 INFO L274 CegarLoopResult]: For program point L94-1(lines 29 104) no Hoare annotation was computed. [2020-11-30 00:05:47,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:05:47,984 INFO L274 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-11-30 00:05:47,984 INFO L274 CegarLoopResult]: For program point L79-1(lines 29 104) no Hoare annotation was computed. [2020-11-30 00:05:47,984 INFO L274 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-11-30 00:05:47,985 INFO L277 CegarLoopResult]: At program point L105(lines 7 109) the Hoare annotation is: true [2020-11-30 00:05:47,985 INFO L274 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-11-30 00:05:47,985 INFO L274 CegarLoopResult]: For program point L64-1(lines 29 104) no Hoare annotation was computed. [2020-11-30 00:05:47,985 INFO L274 CegarLoopResult]: For program point L89-1(lines 29 104) no Hoare annotation was computed. [2020-11-30 00:05:47,985 INFO L274 CegarLoopResult]: For program point L56-1(lines 29 104) no Hoare annotation was computed. [2020-11-30 00:05:47,985 INFO L274 CegarLoopResult]: For program point L48(lines 48 50) no Hoare annotation was computed. [2020-11-30 00:05:47,986 INFO L274 CegarLoopResult]: For program point L48-2(lines 29 104) no Hoare annotation was computed. [2020-11-30 00:05:47,986 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:05:47,986 INFO L274 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-11-30 00:05:47,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:05:47,986 INFO L274 CegarLoopResult]: For program point L74-1(lines 29 104) no Hoare annotation was computed. [2020-11-30 00:05:47,986 INFO L277 CegarLoopResult]: At program point L99-1(lines 29 104) the Hoare annotation is: true [2020-11-30 00:05:47,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:05:47,987 INFO L277 CegarLoopResult]: At program point L108(lines 6 109) the Hoare annotation is: true [2020-11-30 00:05:47,987 INFO L274 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-11-30 00:05:47,988 INFO L274 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-11-30 00:05:47,988 INFO L270 CegarLoopResult]: At program point L100-1(lines 7 109) the Hoare annotation is: false [2020-11-30 00:05:47,988 INFO L274 CegarLoopResult]: For program point L84-1(lines 29 104) no Hoare annotation was computed. [2020-11-30 00:05:47,988 INFO L274 CegarLoopResult]: For program point L68-1(lines 29 104) no Hoare annotation was computed. [2020-11-30 00:05:48,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:05:48 BoogieIcfgContainer [2020-11-30 00:05:48,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:05:48,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:05:48,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:05:48,004 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:05:48,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:05:44" (3/4) ... [2020-11-30 00:05:48,009 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:05:48,031 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 00:05:48,032 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:05:48,032 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:05:48,033 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:05:48,128 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_10610b42-e790-4faa-be97-a88acac5ba30/bin/uautomizer/witness.graphml [2020-11-30 00:05:48,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:05:48,131 INFO L168 Benchmark]: Toolchain (without parser) took 4552.69 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 48.8 MB in the beginning and 35.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:48,132 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 81.8 MB. Free memory was 55.1 MB in the beginning and 55.1 MB in the end (delta: 28.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:05:48,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.62 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 48.6 MB in the beginning and 84.7 MB in the end (delta: -36.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:48,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.14 ms. Allocated memory is still 107.0 MB. Free memory was 84.7 MB in the beginning and 83.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:48,134 INFO L168 Benchmark]: Boogie Preprocessor took 69.05 ms. Allocated memory is still 107.0 MB. Free memory was 83.2 MB in the beginning and 82.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:05:48,135 INFO L168 Benchmark]: RCFGBuilder took 753.75 ms. Allocated memory is still 107.0 MB. Free memory was 82.0 MB in the beginning and 66.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:48,135 INFO L168 Benchmark]: TraceAbstraction took 3122.01 ms. Allocated memory is still 107.0 MB. Free memory was 65.9 MB in the beginning and 39.0 MB in the end (delta: 26.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:48,135 INFO L168 Benchmark]: Witness Printer took 124.12 ms. Allocated memory is still 107.0 MB. Free memory was 39.0 MB in the beginning and 35.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:05:48,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 81.8 MB. Free memory was 55.1 MB in the beginning and 55.1 MB in the end (delta: 28.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 405.62 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 48.6 MB in the beginning and 84.7 MB in the end (delta: -36.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.14 ms. Allocated memory is still 107.0 MB. Free memory was 84.7 MB in the beginning and 83.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.05 ms. Allocated memory is still 107.0 MB. Free memory was 83.2 MB in the beginning and 82.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 753.75 ms. Allocated memory is still 107.0 MB. Free memory was 82.0 MB in the beginning and 66.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3122.01 ms. Allocated memory is still 107.0 MB. Free memory was 65.9 MB in the beginning and 39.0 MB in the end (delta: 26.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * Witness Printer took 124.12 ms. Allocated memory is still 107.0 MB. Free memory was 39.0 MB in the beginning and 35.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 828 SDtfs, 391 SDslu, 527 SDs, 0 SdLazy, 85 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 268 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 73 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 6810 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...