./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_14-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e59705ae4b9d6434bb0d27311e7a023ef1b3945 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:07:39,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:07:39,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:07:39,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:07:39,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:07:39,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:07:39,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:07:39,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:07:39,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:07:39,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:07:39,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:07:39,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:07:39,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:07:39,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:07:39,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:07:39,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:07:39,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:07:39,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:07:39,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:07:39,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:07:39,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:07:39,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:07:39,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:07:39,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:07:39,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:07:39,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:07:39,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:07:39,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:07:39,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:07:39,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:07:39,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:07:39,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:07:39,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:07:39,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:07:39,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:07:39,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:07:39,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:07:39,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:07:39,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:07:39,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:07:39,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:07:39,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:07:39,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:07:39,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:07:39,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:07:39,642 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:07:39,643 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:07:39,643 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:07:39,643 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:07:39,643 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:07:39,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:07:39,644 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:07:39,644 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:07:39,644 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:07:39,645 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:07:39,645 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:07:39,645 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:07:39,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:07:39,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:07:39,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:07:39,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:07:39,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:07:39,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:07:39,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:07:39,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:07:39,648 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:07:39,648 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:07:39,648 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:07:39,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:07:39,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:07:39,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:07:39,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:07:39,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:07:39,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:07:39,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:07:39,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:07:39,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:07:39,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:07:39,651 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:07:39,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:07:39,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:07:39,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:07:39,652 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e59705ae4b9d6434bb0d27311e7a023ef1b3945 [2020-11-22 13:07:39,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:07:39,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:07:39,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:07:39,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:07:39,953 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:07:39,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_14-1.c [2020-11-22 13:07:40,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/data/4a03c0689/28971fbe1c554dd4a6c152be93b75ed0/FLAG9c6d125f8 [2020-11-22 13:07:40,542 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:07:40,543 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/sv-benchmarks/c/locks/test_locks_14-1.c [2020-11-22 13:07:40,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/data/4a03c0689/28971fbe1c554dd4a6c152be93b75ed0/FLAG9c6d125f8 [2020-11-22 13:07:40,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/data/4a03c0689/28971fbe1c554dd4a6c152be93b75ed0 [2020-11-22 13:07:40,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:07:40,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:07:40,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:40,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:07:40,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:07:40,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:40" (1/1) ... [2020-11-22 13:07:40,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4559212a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:40, skipping insertion in model container [2020-11-22 13:07:40,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:40" (1/1) ... [2020-11-22 13:07:40,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:07:40,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:07:41,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:41,155 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:07:41,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:41,198 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:07:41,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41 WrapperNode [2020-11-22 13:07:41,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:41,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:41,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:07:41,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:07:41,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41" (1/1) ... [2020-11-22 13:07:41,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41" (1/1) ... [2020-11-22 13:07:41,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:41,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:07:41,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:07:41,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:07:41,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41" (1/1) ... [2020-11-22 13:07:41,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41" (1/1) ... [2020-11-22 13:07:41,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41" (1/1) ... [2020-11-22 13:07:41,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41" (1/1) ... [2020-11-22 13:07:41,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41" (1/1) ... [2020-11-22 13:07:41,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41" (1/1) ... [2020-11-22 13:07:41,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41" (1/1) ... [2020-11-22 13:07:41,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:07:41,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:07:41,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:07:41,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:07:41,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/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 [2020-11-22 13:07:41,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:07:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:07:41,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:07:41,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:07:42,270 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:07:42,270 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-22 13:07:42,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:42 BoogieIcfgContainer [2020-11-22 13:07:42,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:07:42,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:07:42,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:07:42,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:07:42,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:07:40" (1/3) ... [2020-11-22 13:07:42,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e644f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:42, skipping insertion in model container [2020-11-22 13:07:42,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41" (2/3) ... [2020-11-22 13:07:42,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e644f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:42, skipping insertion in model container [2020-11-22 13:07:42,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:42" (3/3) ... [2020-11-22 13:07:42,283 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-1.c [2020-11-22 13:07:42,293 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:07:42,296 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:07:42,306 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:07:42,333 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:07:42,334 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:07:42,334 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:07:42,334 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:07:42,334 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:07:42,335 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:07:42,335 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:07:42,335 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:07:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-22 13:07:42,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:07:42,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:42,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:07:42,356 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:42,362 INFO L82 PathProgramCache]: Analyzing trace with hash 9181008, now seen corresponding path program 1 times [2020-11-22 13:07:42,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:42,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991540880] [2020-11-22 13:07:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:42,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991540880] [2020-11-22 13:07:42,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:42,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:07:42,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336958674] [2020-11-22 13:07:42,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:07:42,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:42,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:07:42,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:07:42,564 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-11-22 13:07:42,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:42,579 INFO L93 Difference]: Finished difference Result 37 states and 64 transitions. [2020-11-22 13:07:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:07:42,580 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-11-22 13:07:42,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:42,590 INFO L225 Difference]: With dead ends: 37 [2020-11-22 13:07:42,590 INFO L226 Difference]: Without dead ends: 36 [2020-11-22 13:07:42,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:07:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-22 13:07:42,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-22 13:07:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-22 13:07:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-11-22 13:07:42,636 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 4 [2020-11-22 13:07:42,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:42,637 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-11-22 13:07:42,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:07:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-11-22 13:07:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:07:42,637 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:42,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:07:42,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:07:42,638 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:42,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:42,639 INFO L82 PathProgramCache]: Analyzing trace with hash 276482197, now seen corresponding path program 1 times [2020-11-22 13:07:42,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:42,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206369895] [2020-11-22 13:07:42,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:42,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206369895] [2020-11-22 13:07:42,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:42,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:07:42,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891190802] [2020-11-22 13:07:42,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:42,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:42,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:42,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:42,716 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 3 states. [2020-11-22 13:07:42,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:42,728 INFO L93 Difference]: Finished difference Result 35 states and 62 transitions. [2020-11-22 13:07:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:42,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-22 13:07:42,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:42,729 INFO L225 Difference]: With dead ends: 35 [2020-11-22 13:07:42,730 INFO L226 Difference]: Without dead ends: 33 [2020-11-22 13:07:42,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-22 13:07:42,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-22 13:07:42,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 60 transitions. [2020-11-22 13:07:42,736 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 60 transitions. Word has length 5 [2020-11-22 13:07:42,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:42,736 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 60 transitions. [2020-11-22 13:07:42,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 60 transitions. [2020-11-22 13:07:42,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:07:42,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:42,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:07:42,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:07:42,741 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:42,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:42,743 INFO L82 PathProgramCache]: Analyzing trace with hash -10649674, now seen corresponding path program 1 times [2020-11-22 13:07:42,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:42,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374754474] [2020-11-22 13:07:42,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:42,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374754474] [2020-11-22 13:07:42,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:42,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:42,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320493987] [2020-11-22 13:07:42,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:42,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:42,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:42,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:42,879 INFO L87 Difference]: Start difference. First operand 33 states and 60 transitions. Second operand 4 states. [2020-11-22 13:07:42,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:42,924 INFO L93 Difference]: Finished difference Result 63 states and 114 transitions. [2020-11-22 13:07:42,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:42,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 13:07:42,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:42,926 INFO L225 Difference]: With dead ends: 63 [2020-11-22 13:07:42,926 INFO L226 Difference]: Without dead ends: 63 [2020-11-22 13:07:42,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-22 13:07:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2020-11-22 13:07:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2020-11-22 13:07:42,933 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2020-11-22 13:07:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:42,934 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2020-11-22 13:07:42,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2020-11-22 13:07:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:07:42,934 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:42,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:42,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:07:42,935 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:42,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:42,936 INFO L82 PathProgramCache]: Analyzing trace with hash -329927842, now seen corresponding path program 1 times [2020-11-22 13:07:42,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:42,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565241747] [2020-11-22 13:07:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:43,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565241747] [2020-11-22 13:07:43,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:43,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:43,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022620321] [2020-11-22 13:07:43,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:43,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:43,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:43,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,019 INFO L87 Difference]: Start difference. First operand 33 states and 59 transitions. Second operand 4 states. [2020-11-22 13:07:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:43,057 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2020-11-22 13:07:43,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:43,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 13:07:43,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:43,059 INFO L225 Difference]: With dead ends: 61 [2020-11-22 13:07:43,059 INFO L226 Difference]: Without dead ends: 61 [2020-11-22 13:07:43,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-22 13:07:43,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 33. [2020-11-22 13:07:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 58 transitions. [2020-11-22 13:07:43,068 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 58 transitions. Word has length 7 [2020-11-22 13:07:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:43,068 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 58 transitions. [2020-11-22 13:07:43,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 58 transitions. [2020-11-22 13:07:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:07:43,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:43,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:43,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:07:43,070 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:43,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1637616117, now seen corresponding path program 1 times [2020-11-22 13:07:43,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:43,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266672194] [2020-11-22 13:07:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:43,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266672194] [2020-11-22 13:07:43,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:43,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:43,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631327200] [2020-11-22 13:07:43,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:43,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:43,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:43,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,209 INFO L87 Difference]: Start difference. First operand 33 states and 58 transitions. Second operand 4 states. [2020-11-22 13:07:43,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:43,250 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2020-11-22 13:07:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:43,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 13:07:43,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:43,252 INFO L225 Difference]: With dead ends: 59 [2020-11-22 13:07:43,252 INFO L226 Difference]: Without dead ends: 59 [2020-11-22 13:07:43,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-22 13:07:43,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 33. [2020-11-22 13:07:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:43,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 57 transitions. [2020-11-22 13:07:43,264 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 57 transitions. Word has length 8 [2020-11-22 13:07:43,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:43,265 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 57 transitions. [2020-11-22 13:07:43,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:43,265 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 57 transitions. [2020-11-22 13:07:43,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:07:43,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:43,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:43,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:07:43,266 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:43,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:43,267 INFO L82 PathProgramCache]: Analyzing trace with hash 773720659, now seen corresponding path program 1 times [2020-11-22 13:07:43,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:43,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567111912] [2020-11-22 13:07:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:43,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567111912] [2020-11-22 13:07:43,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:43,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:43,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428958314] [2020-11-22 13:07:43,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:43,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:43,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:43,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,341 INFO L87 Difference]: Start difference. First operand 33 states and 57 transitions. Second operand 4 states. [2020-11-22 13:07:43,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:43,388 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-11-22 13:07:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:43,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-22 13:07:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:43,393 INFO L225 Difference]: With dead ends: 57 [2020-11-22 13:07:43,393 INFO L226 Difference]: Without dead ends: 57 [2020-11-22 13:07:43,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-22 13:07:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-11-22 13:07:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 56 transitions. [2020-11-22 13:07:43,399 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 56 transitions. Word has length 9 [2020-11-22 13:07:43,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:43,399 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 56 transitions. [2020-11-22 13:07:43,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:43,399 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 56 transitions. [2020-11-22 13:07:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:07:43,400 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:43,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:43,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:07:43,400 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:43,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:43,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1784250272, now seen corresponding path program 1 times [2020-11-22 13:07:43,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:43,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836950233] [2020-11-22 13:07:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:43,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836950233] [2020-11-22 13:07:43,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:43,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:43,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783035436] [2020-11-22 13:07:43,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:43,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:43,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:43,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,477 INFO L87 Difference]: Start difference. First operand 33 states and 56 transitions. Second operand 4 states. [2020-11-22 13:07:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:43,506 INFO L93 Difference]: Finished difference Result 55 states and 94 transitions. [2020-11-22 13:07:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:43,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-22 13:07:43,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:43,508 INFO L225 Difference]: With dead ends: 55 [2020-11-22 13:07:43,508 INFO L226 Difference]: Without dead ends: 55 [2020-11-22 13:07:43,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-22 13:07:43,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2020-11-22 13:07:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 55 transitions. [2020-11-22 13:07:43,513 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 55 transitions. Word has length 10 [2020-11-22 13:07:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:43,513 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 55 transitions. [2020-11-22 13:07:43,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2020-11-22 13:07:43,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:07:43,514 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:43,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:43,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:07:43,514 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:43,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:43,515 INFO L82 PathProgramCache]: Analyzing trace with hash 523029832, now seen corresponding path program 1 times [2020-11-22 13:07:43,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:43,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856134776] [2020-11-22 13:07:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:43,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856134776] [2020-11-22 13:07:43,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:43,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:43,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450532012] [2020-11-22 13:07:43,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:43,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:43,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:43,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,565 INFO L87 Difference]: Start difference. First operand 33 states and 55 transitions. Second operand 4 states. [2020-11-22 13:07:43,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:43,595 INFO L93 Difference]: Finished difference Result 53 states and 89 transitions. [2020-11-22 13:07:43,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:43,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 13:07:43,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:43,597 INFO L225 Difference]: With dead ends: 53 [2020-11-22 13:07:43,597 INFO L226 Difference]: Without dead ends: 53 [2020-11-22 13:07:43,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-22 13:07:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2020-11-22 13:07:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 54 transitions. [2020-11-22 13:07:43,601 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 54 transitions. Word has length 11 [2020-11-22 13:07:43,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:43,601 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 54 transitions. [2020-11-22 13:07:43,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:43,602 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 54 transitions. [2020-11-22 13:07:43,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:07:43,602 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:43,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:43,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:07:43,603 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:43,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:43,603 INFO L82 PathProgramCache]: Analyzing trace with hash -965730635, now seen corresponding path program 1 times [2020-11-22 13:07:43,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:43,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484758140] [2020-11-22 13:07:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:43,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484758140] [2020-11-22 13:07:43,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:43,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:43,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246710555] [2020-11-22 13:07:43,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:43,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:43,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:43,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,675 INFO L87 Difference]: Start difference. First operand 33 states and 54 transitions. Second operand 4 states. [2020-11-22 13:07:43,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:43,710 INFO L93 Difference]: Finished difference Result 51 states and 84 transitions. [2020-11-22 13:07:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:43,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-22 13:07:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:43,712 INFO L225 Difference]: With dead ends: 51 [2020-11-22 13:07:43,712 INFO L226 Difference]: Without dead ends: 51 [2020-11-22 13:07:43,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-22 13:07:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2020-11-22 13:07:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 53 transitions. [2020-11-22 13:07:43,716 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 53 transitions. Word has length 12 [2020-11-22 13:07:43,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:43,716 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 53 transitions. [2020-11-22 13:07:43,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:43,716 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 53 transitions. [2020-11-22 13:07:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:07:43,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:43,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:43,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 13:07:43,717 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:43,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:43,718 INFO L82 PathProgramCache]: Analyzing trace with hash 127335485, now seen corresponding path program 1 times [2020-11-22 13:07:43,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:43,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104005989] [2020-11-22 13:07:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:43,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104005989] [2020-11-22 13:07:43,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:43,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:43,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926413308] [2020-11-22 13:07:43,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:43,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:43,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:43,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,781 INFO L87 Difference]: Start difference. First operand 33 states and 53 transitions. Second operand 4 states. [2020-11-22 13:07:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:43,816 INFO L93 Difference]: Finished difference Result 49 states and 79 transitions. [2020-11-22 13:07:43,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:43,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-22 13:07:43,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:43,817 INFO L225 Difference]: With dead ends: 49 [2020-11-22 13:07:43,817 INFO L226 Difference]: Without dead ends: 49 [2020-11-22 13:07:43,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-22 13:07:43,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2020-11-22 13:07:43,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 52 transitions. [2020-11-22 13:07:43,821 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 52 transitions. Word has length 13 [2020-11-22 13:07:43,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:43,822 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 52 transitions. [2020-11-22 13:07:43,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:43,822 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 52 transitions. [2020-11-22 13:07:43,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:07:43,823 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:43,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:43,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 13:07:43,823 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:43,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:43,824 INFO L82 PathProgramCache]: Analyzing trace with hash -347352822, now seen corresponding path program 1 times [2020-11-22 13:07:43,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:43,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193176649] [2020-11-22 13:07:43,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:43,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193176649] [2020-11-22 13:07:43,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:43,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:43,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442762271] [2020-11-22 13:07:43,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:43,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:43,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:43,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,884 INFO L87 Difference]: Start difference. First operand 33 states and 52 transitions. Second operand 4 states. [2020-11-22 13:07:43,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:43,913 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2020-11-22 13:07:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:43,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-22 13:07:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:43,915 INFO L225 Difference]: With dead ends: 47 [2020-11-22 13:07:43,915 INFO L226 Difference]: Without dead ends: 47 [2020-11-22 13:07:43,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-22 13:07:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2020-11-22 13:07:43,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-11-22 13:07:43,920 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-11-22 13:07:43,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:43,920 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-11-22 13:07:43,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-11-22 13:07:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:07:43,921 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:43,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:43,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 13:07:43,921 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:43,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:43,922 INFO L82 PathProgramCache]: Analyzing trace with hash 2117179186, now seen corresponding path program 1 times [2020-11-22 13:07:43,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:43,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149679695] [2020-11-22 13:07:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:43,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149679695] [2020-11-22 13:07:43,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:43,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:43,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239425432] [2020-11-22 13:07:43,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:43,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:43,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:43,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:43,984 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-11-22 13:07:44,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:44,014 INFO L93 Difference]: Finished difference Result 45 states and 69 transitions. [2020-11-22 13:07:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:44,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-22 13:07:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:44,016 INFO L225 Difference]: With dead ends: 45 [2020-11-22 13:07:44,016 INFO L226 Difference]: Without dead ends: 45 [2020-11-22 13:07:44,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:44,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-22 13:07:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2020-11-22 13:07:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2020-11-22 13:07:44,019 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 50 transitions. Word has length 15 [2020-11-22 13:07:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:44,019 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-11-22 13:07:44,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-11-22 13:07:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:07:44,020 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:44,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:44,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-22 13:07:44,021 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:44,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:44,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1208260447, now seen corresponding path program 1 times [2020-11-22 13:07:44,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:44,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062705542] [2020-11-22 13:07:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:44,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062705542] [2020-11-22 13:07:44,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:44,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:44,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104561336] [2020-11-22 13:07:44,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:44,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:44,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:44,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:44,073 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 4 states. [2020-11-22 13:07:44,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:44,092 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2020-11-22 13:07:44,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:44,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-22 13:07:44,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:44,094 INFO L225 Difference]: With dead ends: 43 [2020-11-22 13:07:44,094 INFO L226 Difference]: Without dead ends: 43 [2020-11-22 13:07:44,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-22 13:07:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-11-22 13:07:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2020-11-22 13:07:44,098 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 16 [2020-11-22 13:07:44,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:44,098 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2020-11-22 13:07:44,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2020-11-22 13:07:44,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:07:44,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:44,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:44,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-22 13:07:44,099 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:44,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:44,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1198416345, now seen corresponding path program 1 times [2020-11-22 13:07:44,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:44,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784167600] [2020-11-22 13:07:44,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:44,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784167600] [2020-11-22 13:07:44,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:44,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:44,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205713695] [2020-11-22 13:07:44,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:44,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:44,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:44,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:44,146 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand 4 states. [2020-11-22 13:07:44,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:44,167 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-11-22 13:07:44,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:44,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 13:07:44,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:44,168 INFO L225 Difference]: With dead ends: 41 [2020-11-22 13:07:44,168 INFO L226 Difference]: Without dead ends: 41 [2020-11-22 13:07:44,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-22 13:07:44,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2020-11-22 13:07:44,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 48 transitions. [2020-11-22 13:07:44,172 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 48 transitions. Word has length 17 [2020-11-22 13:07:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:44,172 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 48 transitions. [2020-11-22 13:07:44,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:44,172 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 48 transitions. [2020-11-22 13:07:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 13:07:44,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:44,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:44,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-22 13:07:44,174 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:44,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1504014772, now seen corresponding path program 1 times [2020-11-22 13:07:44,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:44,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156297320] [2020-11-22 13:07:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:44,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156297320] [2020-11-22 13:07:44,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:44,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:44,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469337279] [2020-11-22 13:07:44,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:44,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:44,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:44,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:44,210 INFO L87 Difference]: Start difference. First operand 33 states and 48 transitions. Second operand 4 states. [2020-11-22 13:07:44,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:44,235 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2020-11-22 13:07:44,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:44,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-22 13:07:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:44,236 INFO L225 Difference]: With dead ends: 39 [2020-11-22 13:07:44,236 INFO L226 Difference]: Without dead ends: 39 [2020-11-22 13:07:44,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:44,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-22 13:07:44,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-11-22 13:07:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:44,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 47 transitions. [2020-11-22 13:07:44,239 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 47 transitions. Word has length 18 [2020-11-22 13:07:44,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:44,239 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 47 transitions. [2020-11-22 13:07:44,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:44,239 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 47 transitions. [2020-11-22 13:07:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-22 13:07:44,240 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:44,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:44,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-22 13:07:44,240 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:44,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:44,241 INFO L82 PathProgramCache]: Analyzing trace with hash -619966180, now seen corresponding path program 1 times [2020-11-22 13:07:44,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:44,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721215182] [2020-11-22 13:07:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:44,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721215182] [2020-11-22 13:07:44,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:44,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:44,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528052191] [2020-11-22 13:07:44,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:44,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:44,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:44,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:44,289 INFO L87 Difference]: Start difference. First operand 33 states and 47 transitions. Second operand 4 states. [2020-11-22 13:07:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:44,309 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2020-11-22 13:07:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:44,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-22 13:07:44,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:44,310 INFO L225 Difference]: With dead ends: 33 [2020-11-22 13:07:44,310 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:07:44,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:07:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:07:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:07:44,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:07:44,311 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-22 13:07:44,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:44,311 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:07:44,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:44,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:07:44,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:07:44,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-22 13:07:44,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:07:44 BoogieIcfgContainer [2020-11-22 13:07:44,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:07:44,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:07:44,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:07:44,317 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:07:44,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:42" (3/4) ... [2020-11-22 13:07:44,322 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:07:44,343 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-22 13:07:44,344 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-22 13:07:44,344 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-22 13:07:44,345 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:07:44,444 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f1e75321-3cec-4b7c-b16d-04c8d96d48f5/bin/utaipan/witness.graphml [2020-11-22 13:07:44,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:07:44,446 INFO L168 Benchmark]: Toolchain (without parser) took 3542.59 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 59.2 MB in the beginning and 65.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:44,447 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 48.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:44,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.20 ms. Allocated memory is still 90.2 MB. Free memory was 59.0 MB in the beginning and 66.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:44,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.99 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 64.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:44,449 INFO L168 Benchmark]: Boogie Preprocessor took 30.14 ms. Allocated memory is still 90.2 MB. Free memory was 64.3 MB in the beginning and 62.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:44,449 INFO L168 Benchmark]: RCFGBuilder took 999.43 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 62.8 MB in the beginning and 57.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:44,450 INFO L168 Benchmark]: TraceAbstraction took 2041.58 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 57.6 MB in the beginning and 70.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:44,450 INFO L168 Benchmark]: Witness Printer took 127.55 ms. Allocated memory is still 132.1 MB. Free memory was 70.2 MB in the beginning and 65.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:44,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 48.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.20 ms. Allocated memory is still 90.2 MB. Free memory was 59.0 MB in the beginning and 66.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.99 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 64.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.14 ms. Allocated memory is still 90.2 MB. Free memory was 64.3 MB in the beginning and 62.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 999.43 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 62.8 MB in the beginning and 57.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2041.58 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 57.6 MB in the beginning and 70.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Witness Printer took 127.55 ms. Allocated memory is still 132.1 MB. Free memory was 70.2 MB in the beginning and 65.0 MB in the end (delta: 5.2 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]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 832 SDtfs, 659 SDslu, 1055 SDs, 0 SdLazy, 126 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 234 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 11068 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...