./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_15-2.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_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_15-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/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 87d55100d8515cc1c8c9aa61ce99443e0eafb474 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 13:06:20,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:20,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:20,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:20,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:20,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:20,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:20,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:20,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:20,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:20,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:20,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:20,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:20,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:20,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:20,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:20,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:20,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:20,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:20,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:20,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:20,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:20,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:20,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:20,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:20,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:20,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:20,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:20,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:20,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:20,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:20,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:20,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:20,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:20,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:20,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:20,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:20,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:20,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:20,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:20,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:20,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:06:20,909 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:20,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:20,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:20,910 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:20,911 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:20,911 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:20,911 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:20,911 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:20,911 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:20,911 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:20,912 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:20,913 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:20,913 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:20,913 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:20,913 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:20,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:06:20,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:06:20,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:20,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:20,915 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:06:20,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:20,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:20,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:20,915 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:06:20,916 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:06:20,916 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:06:20,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:20,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:20,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:20,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:20,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:20,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:20,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:20,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:20,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:20,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:20,919 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:20,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:20,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:20,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:20,920 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_32267fcc-1b89-4864-93f3-bdbffb542fc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87d55100d8515cc1c8c9aa61ce99443e0eafb474 [2020-11-22 13:06:21,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:21,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:21,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:21,248 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:21,250 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:21,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_15-2.c [2020-11-22 13:06:21,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan/data/ba1ae9b03/f756bd64ea814f1f8835074c9d4c430f/FLAG387e89bb3 [2020-11-22 13:06:21,889 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:21,891 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/sv-benchmarks/c/locks/test_locks_15-2.c [2020-11-22 13:06:21,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan/data/ba1ae9b03/f756bd64ea814f1f8835074c9d4c430f/FLAG387e89bb3 [2020-11-22 13:06:22,243 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan/data/ba1ae9b03/f756bd64ea814f1f8835074c9d4c430f [2020-11-22 13:06:22,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:22,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:22,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:22,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:22,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:22,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1784f8bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22, skipping insertion in model container [2020-11-22 13:06:22,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:22,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:22,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:22,482 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:22,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:22,532 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:22,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22 WrapperNode [2020-11-22 13:06:22,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:22,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:22,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:22,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:22,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:22,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:22,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:22,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:22,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:22,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:22,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:22,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:22,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/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 13:06:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:23,556 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:23,556 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-22 13:06:23,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:23 BoogieIcfgContainer [2020-11-22 13:06:23,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:23,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:23,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:23,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:23,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:22" (1/3) ... [2020-11-22 13:06:23,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3910e202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:23, skipping insertion in model container [2020-11-22 13:06:23,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (2/3) ... [2020-11-22 13:06:23,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3910e202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:23, skipping insertion in model container [2020-11-22 13:06:23,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:23" (3/3) ... [2020-11-22 13:06:23,567 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.c [2020-11-22 13:06:23,577 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:23,581 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:06:23,592 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:06:23,609 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:23,609 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:06:23,609 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:23,609 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:23,609 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:23,609 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:23,609 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:23,609 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-22 13:06:23,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:06:23,626 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:23,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:06:23,627 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:23,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:23,633 INFO L82 PathProgramCache]: Analyzing trace with hash 9710102, now seen corresponding path program 1 times [2020-11-22 13:06:23,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:23,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485647271] [2020-11-22 13:06:23,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:23,814 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 13:06:23,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485647271] [2020-11-22 13:06:23,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:23,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:06:23,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195531184] [2020-11-22 13:06:23,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:06:23,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:23,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:06:23,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:23,835 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-22 13:06:23,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:23,848 INFO L93 Difference]: Finished difference Result 39 states and 68 transitions. [2020-11-22 13:06:23,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:23,849 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-11-22 13:06:23,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:23,857 INFO L225 Difference]: With dead ends: 39 [2020-11-22 13:06:23,858 INFO L226 Difference]: Without dead ends: 38 [2020-11-22 13:06:23,859 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 13:06:23,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-22 13:06:23,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-11-22 13:06:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-22 13:06:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 67 transitions. [2020-11-22 13:06:23,890 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 67 transitions. Word has length 4 [2020-11-22 13:06:23,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:23,890 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 67 transitions. [2020-11-22 13:06:23,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:06:23,891 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 67 transitions. [2020-11-22 13:06:23,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:06:23,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:23,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:06:23,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:06:23,892 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:23,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:23,893 INFO L82 PathProgramCache]: Analyzing trace with hash 292182598, now seen corresponding path program 1 times [2020-11-22 13:06:23,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:23,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763235132] [2020-11-22 13:06:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:23,945 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 13:06:23,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763235132] [2020-11-22 13:06:23,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:23,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:06:23,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168326871] [2020-11-22 13:06:23,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:06:23,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:23,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:06:23,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:23,949 INFO L87 Difference]: Start difference. First operand 38 states and 67 transitions. Second operand 3 states. [2020-11-22 13:06:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:23,955 INFO L93 Difference]: Finished difference Result 37 states and 66 transitions. [2020-11-22 13:06:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:06:23,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-22 13:06:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:23,956 INFO L225 Difference]: With dead ends: 37 [2020-11-22 13:06:23,956 INFO L226 Difference]: Without dead ends: 35 [2020-11-22 13:06:23,957 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 13:06:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-22 13:06:23,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-22 13:06:23,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:23,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 64 transitions. [2020-11-22 13:06:23,963 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 64 transitions. Word has length 5 [2020-11-22 13:06:23,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:23,963 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 64 transitions. [2020-11-22 13:06:23,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:06:23,964 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 64 transitions. [2020-11-22 13:06:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:06:23,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:23,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:06:23,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:06:23,965 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:23,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:23,965 INFO L82 PathProgramCache]: Analyzing trace with hash 476617891, now seen corresponding path program 1 times [2020-11-22 13:06:23,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:23,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322194686] [2020-11-22 13:06:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:24,065 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 13:06:24,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322194686] [2020-11-22 13:06:24,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:24,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:24,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645830564] [2020-11-22 13:06:24,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:24,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:24,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:24,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:24,068 INFO L87 Difference]: Start difference. First operand 35 states and 64 transitions. Second operand 4 states. [2020-11-22 13:06:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:24,105 INFO L93 Difference]: Finished difference Result 67 states and 122 transitions. [2020-11-22 13:06:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:24,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 13:06:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:24,108 INFO L225 Difference]: With dead ends: 67 [2020-11-22 13:06:24,108 INFO L226 Difference]: Without dead ends: 67 [2020-11-22 13:06:24,108 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 13:06:24,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-22 13:06:24,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 35. [2020-11-22 13:06:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:24,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 63 transitions. [2020-11-22 13:06:24,117 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 63 transitions. Word has length 6 [2020-11-22 13:06:24,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:24,117 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 63 transitions. [2020-11-22 13:06:24,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:24,117 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 63 transitions. [2020-11-22 13:06:24,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:06:24,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:24,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:24,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:06:24,118 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:24,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:24,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1890464461, now seen corresponding path program 1 times [2020-11-22 13:06:24,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:24,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143963615] [2020-11-22 13:06:24,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:24,225 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 13:06:24,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143963615] [2020-11-22 13:06:24,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:24,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:24,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362759338] [2020-11-22 13:06:24,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:24,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:24,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:24,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:24,227 INFO L87 Difference]: Start difference. First operand 35 states and 63 transitions. Second operand 4 states. [2020-11-22 13:06:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:24,276 INFO L93 Difference]: Finished difference Result 65 states and 117 transitions. [2020-11-22 13:06:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:24,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 13:06:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:24,277 INFO L225 Difference]: With dead ends: 65 [2020-11-22 13:06:24,278 INFO L226 Difference]: Without dead ends: 65 [2020-11-22 13:06:24,278 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 13:06:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-22 13:06:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 35. [2020-11-22 13:06:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 62 transitions. [2020-11-22 13:06:24,283 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 62 transitions. Word has length 7 [2020-11-22 13:06:24,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:24,284 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 62 transitions. [2020-11-22 13:06:24,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:24,284 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 62 transitions. [2020-11-22 13:06:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:06:24,284 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:24,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:24,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:06:24,285 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:24,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1524931784, now seen corresponding path program 1 times [2020-11-22 13:06:24,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:24,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092892726] [2020-11-22 13:06:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:24,371 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 13:06:24,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092892726] [2020-11-22 13:06:24,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:24,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:24,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002281109] [2020-11-22 13:06:24,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:24,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:24,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:24,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:24,373 INFO L87 Difference]: Start difference. First operand 35 states and 62 transitions. Second operand 4 states. [2020-11-22 13:06:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:24,407 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-11-22 13:06:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:24,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 13:06:24,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:24,409 INFO L225 Difference]: With dead ends: 63 [2020-11-22 13:06:24,409 INFO L226 Difference]: Without dead ends: 63 [2020-11-22 13:06:24,410 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 13:06:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-22 13:06:24,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 35. [2020-11-22 13:06:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 61 transitions. [2020-11-22 13:06:24,415 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 61 transitions. Word has length 8 [2020-11-22 13:06:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:24,415 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 61 transitions. [2020-11-22 13:06:24,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 61 transitions. [2020-11-22 13:06:24,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:06:24,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:24,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:24,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:06:24,420 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:24,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:24,422 INFO L82 PathProgramCache]: Analyzing trace with hash -28032638, now seen corresponding path program 1 times [2020-11-22 13:06:24,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:24,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489285761] [2020-11-22 13:06:24,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:24,507 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 13:06:24,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489285761] [2020-11-22 13:06:24,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:24,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:24,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708356334] [2020-11-22 13:06:24,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:24,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:24,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:24,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:24,509 INFO L87 Difference]: Start difference. First operand 35 states and 61 transitions. Second operand 4 states. [2020-11-22 13:06:24,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:24,538 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-11-22 13:06:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:24,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-22 13:06:24,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:24,540 INFO L225 Difference]: With dead ends: 61 [2020-11-22 13:06:24,540 INFO L226 Difference]: Without dead ends: 61 [2020-11-22 13:06:24,541 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 13:06:24,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-22 13:06:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 35. [2020-11-22 13:06:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 60 transitions. [2020-11-22 13:06:24,546 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 60 transitions. Word has length 9 [2020-11-22 13:06:24,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:24,546 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 60 transitions. [2020-11-22 13:06:24,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:24,546 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 60 transitions. [2020-11-22 13:06:24,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:06:24,547 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:24,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:24,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:06:24,547 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:24,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:24,548 INFO L82 PathProgramCache]: Analyzing trace with hash -868799027, now seen corresponding path program 1 times [2020-11-22 13:06:24,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:24,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244528554] [2020-11-22 13:06:24,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:24,611 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 13:06:24,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244528554] [2020-11-22 13:06:24,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:24,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:24,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274953092] [2020-11-22 13:06:24,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:24,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:24,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:24,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:24,613 INFO L87 Difference]: Start difference. First operand 35 states and 60 transitions. Second operand 4 states. [2020-11-22 13:06:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:24,644 INFO L93 Difference]: Finished difference Result 59 states and 102 transitions. [2020-11-22 13:06:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:24,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-22 13:06:24,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:24,647 INFO L225 Difference]: With dead ends: 59 [2020-11-22 13:06:24,647 INFO L226 Difference]: Without dead ends: 59 [2020-11-22 13:06:24,647 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 13:06:24,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-22 13:06:24,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-11-22 13:06:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 59 transitions. [2020-11-22 13:06:24,652 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 59 transitions. Word has length 10 [2020-11-22 13:06:24,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:24,652 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 59 transitions. [2020-11-22 13:06:24,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:24,652 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 59 transitions. [2020-11-22 13:06:24,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:06:24,653 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:24,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:24,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:06:24,653 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:24,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:24,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1162752969, now seen corresponding path program 1 times [2020-11-22 13:06:24,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:24,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141584813] [2020-11-22 13:06:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:24,705 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 13:06:24,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141584813] [2020-11-22 13:06:24,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:24,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:24,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405626172] [2020-11-22 13:06:24,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:24,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:24,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:24,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:24,708 INFO L87 Difference]: Start difference. First operand 35 states and 59 transitions. Second operand 4 states. [2020-11-22 13:06:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:24,731 INFO L93 Difference]: Finished difference Result 57 states and 97 transitions. [2020-11-22 13:06:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:24,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 13:06:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:24,732 INFO L225 Difference]: With dead ends: 57 [2020-11-22 13:06:24,732 INFO L226 Difference]: Without dead ends: 57 [2020-11-22 13:06:24,733 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 13:06:24,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-22 13:06:24,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 35. [2020-11-22 13:06:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 58 transitions. [2020-11-22 13:06:24,737 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 58 transitions. Word has length 11 [2020-11-22 13:06:24,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:24,737 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 58 transitions. [2020-11-22 13:06:24,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:24,737 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 58 transitions. [2020-11-22 13:06:24,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:06:24,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:24,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:24,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:06:24,738 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:24,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1685390238, now seen corresponding path program 1 times [2020-11-22 13:06:24,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:24,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224421448] [2020-11-22 13:06:24,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:24,827 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 13:06:24,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224421448] [2020-11-22 13:06:24,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:24,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:24,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652919369] [2020-11-22 13:06:24,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:24,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:24,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:24,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:24,829 INFO L87 Difference]: Start difference. First operand 35 states and 58 transitions. Second operand 4 states. [2020-11-22 13:06:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:24,855 INFO L93 Difference]: Finished difference Result 55 states and 92 transitions. [2020-11-22 13:06:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:24,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-22 13:06:24,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:24,856 INFO L225 Difference]: With dead ends: 55 [2020-11-22 13:06:24,857 INFO L226 Difference]: Without dead ends: 55 [2020-11-22 13:06:24,857 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 13:06:24,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-22 13:06:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 35. [2020-11-22 13:06:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 57 transitions. [2020-11-22 13:06:24,860 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 57 transitions. Word has length 12 [2020-11-22 13:06:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:24,861 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 57 transitions. [2020-11-22 13:06:24,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 57 transitions. [2020-11-22 13:06:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:06:24,861 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:24,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:24,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 13:06:24,862 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:24,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:24,862 INFO L82 PathProgramCache]: Analyzing trace with hash -707276052, now seen corresponding path program 1 times [2020-11-22 13:06:24,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:24,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819351530] [2020-11-22 13:06:24,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:24,908 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 13:06:24,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819351530] [2020-11-22 13:06:24,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:24,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:24,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436736243] [2020-11-22 13:06:24,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:24,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:24,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:24,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:24,910 INFO L87 Difference]: Start difference. First operand 35 states and 57 transitions. Second operand 4 states. [2020-11-22 13:06:24,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:24,941 INFO L93 Difference]: Finished difference Result 53 states and 87 transitions. [2020-11-22 13:06:24,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:24,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-22 13:06:24,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:24,942 INFO L225 Difference]: With dead ends: 53 [2020-11-22 13:06:24,943 INFO L226 Difference]: Without dead ends: 53 [2020-11-22 13:06:24,943 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 13:06:24,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-22 13:06:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 35. [2020-11-22 13:06:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-11-22 13:06:24,946 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 13 [2020-11-22 13:06:24,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:24,947 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-11-22 13:06:24,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-11-22 13:06:24,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:06:24,947 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:24,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:24,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 13:06:24,948 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:24,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:24,948 INFO L82 PathProgramCache]: Analyzing trace with hash -450507017, now seen corresponding path program 1 times [2020-11-22 13:06:24,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:24,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471847745] [2020-11-22 13:06:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:25,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471847745] [2020-11-22 13:06:25,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:25,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:25,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581436815] [2020-11-22 13:06:25,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:25,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:25,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:25,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:25,022 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-11-22 13:06:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:25,040 INFO L93 Difference]: Finished difference Result 51 states and 82 transitions. [2020-11-22 13:06:25,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:25,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-22 13:06:25,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:25,041 INFO L225 Difference]: With dead ends: 51 [2020-11-22 13:06:25,041 INFO L226 Difference]: Without dead ends: 51 [2020-11-22 13:06:25,042 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 13:06:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-22 13:06:25,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2020-11-22 13:06:25,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 55 transitions. [2020-11-22 13:06:25,045 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 55 transitions. Word has length 14 [2020-11-22 13:06:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:25,045 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 55 transitions. [2020-11-22 13:06:25,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 55 transitions. [2020-11-22 13:06:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:06:25,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:25,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:25,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 13:06:25,046 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:25,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:25,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1080601183, now seen corresponding path program 1 times [2020-11-22 13:06:25,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:25,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257236949] [2020-11-22 13:06:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:25,090 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 13:06:25,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257236949] [2020-11-22 13:06:25,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:25,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:25,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675896644] [2020-11-22 13:06:25,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:25,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:25,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:25,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:25,092 INFO L87 Difference]: Start difference. First operand 35 states and 55 transitions. Second operand 4 states. [2020-11-22 13:06:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:25,117 INFO L93 Difference]: Finished difference Result 49 states and 77 transitions. [2020-11-22 13:06:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:25,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-22 13:06:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:25,119 INFO L225 Difference]: With dead ends: 49 [2020-11-22 13:06:25,119 INFO L226 Difference]: Without dead ends: 49 [2020-11-22 13:06:25,119 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 13:06:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-22 13:06:25,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2020-11-22 13:06:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 54 transitions. [2020-11-22 13:06:25,122 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 54 transitions. Word has length 15 [2020-11-22 13:06:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:25,122 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 54 transitions. [2020-11-22 13:06:25,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 54 transitions. [2020-11-22 13:06:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:06:25,123 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:25,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:25,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-22 13:06:25,124 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:25,124 INFO L82 PathProgramCache]: Analyzing trace with hash 861316492, now seen corresponding path program 1 times [2020-11-22 13:06:25,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:25,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390929868] [2020-11-22 13:06:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:25,169 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 13:06:25,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390929868] [2020-11-22 13:06:25,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:25,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:25,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307176678] [2020-11-22 13:06:25,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:25,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:25,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:25,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:25,171 INFO L87 Difference]: Start difference. First operand 35 states and 54 transitions. Second operand 4 states. [2020-11-22 13:06:25,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:25,200 INFO L93 Difference]: Finished difference Result 47 states and 72 transitions. [2020-11-22 13:06:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:25,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-22 13:06:25,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:25,202 INFO L225 Difference]: With dead ends: 47 [2020-11-22 13:06:25,202 INFO L226 Difference]: Without dead ends: 47 [2020-11-22 13:06:25,202 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 13:06:25,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-22 13:06:25,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-11-22 13:06:25,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2020-11-22 13:06:25,205 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 16 [2020-11-22 13:06:25,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:25,205 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2020-11-22 13:06:25,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:25,205 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2020-11-22 13:06:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:06:25,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:25,206 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 13:06:25,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-22 13:06:25,206 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:25,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:25,207 INFO L82 PathProgramCache]: Analyzing trace with hash 931222614, now seen corresponding path program 1 times [2020-11-22 13:06:25,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:25,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149449830] [2020-11-22 13:06:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:25,245 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 13:06:25,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149449830] [2020-11-22 13:06:25,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:25,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:25,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824548757] [2020-11-22 13:06:25,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:25,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:25,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:25,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:25,248 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand 4 states. [2020-11-22 13:06:25,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:25,269 INFO L93 Difference]: Finished difference Result 45 states and 67 transitions. [2020-11-22 13:06:25,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:25,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 13:06:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:25,271 INFO L225 Difference]: With dead ends: 45 [2020-11-22 13:06:25,271 INFO L226 Difference]: Without dead ends: 45 [2020-11-22 13:06:25,271 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 13:06:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-22 13:06:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2020-11-22 13:06:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2020-11-22 13:06:25,273 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 52 transitions. Word has length 17 [2020-11-22 13:06:25,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:25,274 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 52 transitions. [2020-11-22 13:06:25,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2020-11-22 13:06:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 13:06:25,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:25,275 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 13:06:25,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-22 13:06:25,275 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:25,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:25,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1196654559, now seen corresponding path program 1 times [2020-11-22 13:06:25,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:25,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856598122] [2020-11-22 13:06:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:25,312 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 13:06:25,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856598122] [2020-11-22 13:06:25,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:25,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:25,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742981600] [2020-11-22 13:06:25,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:25,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:25,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:25,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:25,314 INFO L87 Difference]: Start difference. First operand 35 states and 52 transitions. Second operand 4 states. [2020-11-22 13:06:25,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:25,331 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2020-11-22 13:06:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:25,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-22 13:06:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:25,332 INFO L225 Difference]: With dead ends: 43 [2020-11-22 13:06:25,333 INFO L226 Difference]: Without dead ends: 43 [2020-11-22 13:06:25,333 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 13:06:25,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-22 13:06:25,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-11-22 13:06:25,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 51 transitions. [2020-11-22 13:06:25,335 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 51 transitions. Word has length 18 [2020-11-22 13:06:25,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:25,336 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 51 transitions. [2020-11-22 13:06:25,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2020-11-22 13:06:25,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-22 13:06:25,336 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:25,337 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 13:06:25,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-22 13:06:25,337 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:25,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1558630155, now seen corresponding path program 1 times [2020-11-22 13:06:25,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:25,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629701937] [2020-11-22 13:06:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:25,365 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 13:06:25,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629701937] [2020-11-22 13:06:25,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:25,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:25,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584290383] [2020-11-22 13:06:25,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:25,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:25,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:25,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:25,367 INFO L87 Difference]: Start difference. First operand 35 states and 51 transitions. Second operand 4 states. [2020-11-22 13:06:25,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:25,383 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-11-22 13:06:25,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:25,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-22 13:06:25,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:25,384 INFO L225 Difference]: With dead ends: 41 [2020-11-22 13:06:25,384 INFO L226 Difference]: Without dead ends: 41 [2020-11-22 13:06:25,385 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 13:06:25,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-22 13:06:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2020-11-22 13:06:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:06:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-11-22 13:06:25,387 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 19 [2020-11-22 13:06:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:25,387 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-11-22 13:06:25,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:25,387 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-11-22 13:06:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-22 13:06:25,388 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:25,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:25,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-22 13:06:25,389 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:06:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:25,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1073110710, now seen corresponding path program 1 times [2020-11-22 13:06:25,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:25,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291335572] [2020-11-22 13:06:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:25,447 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 13:06:25,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291335572] [2020-11-22 13:06:25,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:25,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:25,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030245574] [2020-11-22 13:06:25,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:25,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:25,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:25,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:25,449 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 4 states. [2020-11-22 13:06:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:25,466 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-11-22 13:06:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:25,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-22 13:06:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:25,467 INFO L225 Difference]: With dead ends: 35 [2020-11-22 13:06:25,467 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:06:25,468 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 13:06:25,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:06:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:06:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:06:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:06:25,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-11-22 13:06:25,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:25,468 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:06:25,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:06:25,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:06:25,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-22 13:06:25,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:25 BoogieIcfgContainer [2020-11-22 13:06:25,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:25,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:25,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:25,478 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:25,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:23" (3/4) ... [2020-11-22 13:06:25,481 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:06:25,501 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 13:06:25,503 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-22 13:06:25,503 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 13:06:25,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:06:25,606 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_32267fcc-1b89-4864-93f3-bdbffb542fc3/bin/utaipan/witness.graphml [2020-11-22 13:06:25,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:25,608 INFO L168 Benchmark]: Toolchain (without parser) took 3360.14 ms. Allocated memory was 144.7 MB in the beginning and 176.2 MB in the end (delta: 31.5 MB). Free memory was 119.9 MB in the beginning and 142.8 MB in the end (delta: -22.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,609 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:25,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.86 ms. Allocated memory is still 144.7 MB. Free memory was 119.5 MB in the beginning and 121.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,610 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.49 ms. Allocated memory is still 144.7 MB. Free memory was 121.2 MB in the beginning and 119.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:25,610 INFO L168 Benchmark]: Boogie Preprocessor took 26.43 ms. Allocated memory is still 144.7 MB. Free memory was 119.6 MB in the beginning and 118.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,611 INFO L168 Benchmark]: RCFGBuilder took 958.66 ms. Allocated memory is still 144.7 MB. Free memory was 117.8 MB in the beginning and 65.1 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,611 INFO L168 Benchmark]: TraceAbstraction took 1916.95 ms. Allocated memory was 144.7 MB in the beginning and 176.2 MB in the end (delta: 31.5 MB). Free memory was 64.6 MB in the beginning and 148.1 MB in the end (delta: -83.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:25,611 INFO L168 Benchmark]: Witness Printer took 128.89 ms. Allocated memory is still 176.2 MB. Free memory was 147.0 MB in the beginning and 142.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.86 ms. Allocated memory is still 144.7 MB. Free memory was 119.5 MB in the beginning and 121.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.49 ms. Allocated memory is still 144.7 MB. Free memory was 121.2 MB in the beginning and 119.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.43 ms. Allocated memory is still 144.7 MB. Free memory was 119.6 MB in the beginning and 118.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 958.66 ms. Allocated memory is still 144.7 MB. Free memory was 117.8 MB in the beginning and 65.1 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1916.95 ms. Allocated memory was 144.7 MB in the beginning and 176.2 MB in the end (delta: 31.5 MB). Free memory was 64.6 MB in the beginning and 148.1 MB in the end (delta: -83.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 128.89 ms. Allocated memory is still 176.2 MB. Free memory was 147.0 MB in the beginning and 142.8 MB in the end (delta: 4.2 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, 39 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 943 SDtfs, 751 SDslu, 1213 SDs, 0 SdLazy, 135 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 17 MinimizatonAttempts, 266 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 187 ConstructedInterpolants, 0 QuantifiedInterpolants, 13177 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 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...