./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba --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 cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:25:57,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:25:57,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:25:57,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:25:57,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:25:57,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:25:57,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:25:57,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:25:57,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:25:57,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:25:57,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:25:57,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:25:57,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:25:57,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:25:57,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:25:57,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:25:57,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:25:57,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:25:57,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:25:57,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:25:57,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:25:57,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:25:57,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:25:57,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:25:57,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:25:57,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:25:57,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:25:57,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:25:57,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:25:57,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:25:57,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:25:57,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:25:57,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:25:57,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:25:57,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:25:57,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:25:57,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:25:57,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:25:57,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:25:57,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:25:57,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:25:57,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 01:25:57,267 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:25:57,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:25:57,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:25:57,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:25:57,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:25:57,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:25:57,270 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:25:57,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:25:57,271 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:25:57,271 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:25:57,271 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:25:57,272 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:25:57,272 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:25:57,272 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:25:57,273 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:25:57,273 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:25:57,273 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:25:57,274 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:25:57,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:25:57,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:25:57,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:25:57,275 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:25:57,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:25:57,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:25:57,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:25:57,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:25:57,277 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:25:57,277 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:25:57,278 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:25:57,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:25:57,278 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:25:57,278 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:25:57,279 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:25:57,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:25:57,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:25:57,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:25:57,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:25:57,280 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:25:57,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:25:57,281 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:25:57,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:25:57,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:25:57,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2022-11-22 01:25:57,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:25:57,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:25:57,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:25:57,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:25:57,597 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:25:57,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-11-22 01:26:00,760 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:26:01,184 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:26:01,184 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-11-22 01:26:01,207 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/data/440158bd4/47308a0720dd450fb68e768321bb481e/FLAGe0c815449 [2022-11-22 01:26:01,224 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/data/440158bd4/47308a0720dd450fb68e768321bb481e [2022-11-22 01:26:01,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:26:01,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:26:01,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:26:01,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:26:01,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:26:01,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783b711c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01, skipping insertion in model container [2022-11-22 01:26:01,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:26:01,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:26:01,479 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2022-11-22 01:26:01,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:26:01,705 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:26:01,727 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2022-11-22 01:26:01,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:26:01,809 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:26:01,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01 WrapperNode [2022-11-22 01:26:01,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:26:01,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:26:01,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:26:01,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:26:01,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,865 INFO L138 Inliner]: procedures = 165, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-11-22 01:26:01,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:26:01,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:26:01,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:26:01,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:26:01,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:26:01,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:26:01,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:26:01,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:26:01,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (1/1) ... [2022-11-22 01:26:01,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:26:01,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:26:01,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:26:01,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:26:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-22 01:26:01,989 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-22 01:26:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:26:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 01:26:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:26:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:26:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-11-22 01:26:01,991 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-11-22 01:26:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-22 01:26:01,991 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-22 01:26:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:26:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:26:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:26:01,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:26:01,995 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:26:02,160 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:26:02,163 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:26:02,541 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:26:02,550 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:26:02,550 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:26:02,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:26:02 BoogieIcfgContainer [2022-11-22 01:26:02,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:26:02,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:26:02,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:26:02,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:26:02,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:26:01" (1/3) ... [2022-11-22 01:26:02,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74347115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:26:02, skipping insertion in model container [2022-11-22 01:26:02,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:26:01" (2/3) ... [2022-11-22 01:26:02,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74347115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:26:02, skipping insertion in model container [2022-11-22 01:26:02,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:26:02" (3/3) ... [2022-11-22 01:26:02,563 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2022-11-22 01:26:02,585 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:26:02,585 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-22 01:26:02,586 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:26:02,758 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 01:26:02,832 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:26:02,850 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 177 transitions, 369 flow [2022-11-22 01:26:02,853 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 177 transitions, 369 flow [2022-11-22 01:26:02,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 177 transitions, 369 flow [2022-11-22 01:26:02,958 INFO L130 PetriNetUnfolder]: 5/174 cut-off events. [2022-11-22 01:26:02,958 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-22 01:26:02,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 174 events. 5/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 284 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2022-11-22 01:26:02,976 INFO L119 LiptonReduction]: Number of co-enabled transitions 10466 [2022-11-22 01:26:11,155 INFO L134 LiptonReduction]: Checked pairs total: 24195 [2022-11-22 01:26:11,155 INFO L136 LiptonReduction]: Total number of compositions: 182 [2022-11-22 01:26:11,165 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 48 transitions, 111 flow [2022-11-22 01:26:11,409 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5554 states, 5531 states have (on average 3.6709455794612187) internal successors, (20304), 5553 states have internal predecessors, (20304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:11,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:26:11,436 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2022fe0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:26:11,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-22 01:26:11,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 5554 states, 5531 states have (on average 3.6709455794612187) internal successors, (20304), 5553 states have internal predecessors, (20304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 01:26:11,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:11,462 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 01:26:11,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:11,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash 660, now seen corresponding path program 1 times [2022-11-22 01:26:11,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:11,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498128982] [2022-11-22 01:26:11,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:11,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:11,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:11,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498128982] [2022-11-22 01:26:11,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498128982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:11,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:11,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 01:26:11,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598752713] [2022-11-22 01:26:11,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:11,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:26:11,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:11,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:26:11,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:26:11,708 INFO L87 Difference]: Start difference. First operand has 5554 states, 5531 states have (on average 3.6709455794612187) internal successors, (20304), 5553 states have internal predecessors, (20304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:11,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:11,912 INFO L93 Difference]: Finished difference Result 5552 states and 19822 transitions. [2022-11-22 01:26:11,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:26:11,916 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-22 01:26:11,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:11,985 INFO L225 Difference]: With dead ends: 5552 [2022-11-22 01:26:11,985 INFO L226 Difference]: Without dead ends: 5552 [2022-11-22 01:26:11,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:26:11,991 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:11,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:26:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2022-11-22 01:26:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 5552. [2022-11-22 01:26:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5552 states, 5531 states have (on average 3.5838003977580906) internal successors, (19822), 5551 states have internal predecessors, (19822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:12,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5552 states to 5552 states and 19822 transitions. [2022-11-22 01:26:12,501 INFO L78 Accepts]: Start accepts. Automaton has 5552 states and 19822 transitions. Word has length 1 [2022-11-22 01:26:12,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:12,502 INFO L495 AbstractCegarLoop]: Abstraction has 5552 states and 19822 transitions. [2022-11-22 01:26:12,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:12,505 INFO L276 IsEmpty]: Start isEmpty. Operand 5552 states and 19822 transitions. [2022-11-22 01:26:12,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:26:12,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:12,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:26:12,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:26:12,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:12,507 INFO L85 PathProgramCache]: Analyzing trace with hash 647779, now seen corresponding path program 1 times [2022-11-22 01:26:12,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:12,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061534149] [2022-11-22 01:26:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:12,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:12,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:12,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061534149] [2022-11-22 01:26:12,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061534149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:12,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:12,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:26:12,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796387756] [2022-11-22 01:26:12,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:12,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:26:12,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:26:12,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:26:12,915 INFO L87 Difference]: Start difference. First operand 5552 states and 19822 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:13,139 INFO L93 Difference]: Finished difference Result 5542 states and 19802 transitions. [2022-11-22 01:26:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:26:13,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 01:26:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:13,182 INFO L225 Difference]: With dead ends: 5542 [2022-11-22 01:26:13,183 INFO L226 Difference]: Without dead ends: 5542 [2022-11-22 01:26:13,183 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:26:13,184 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:13,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 18 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:26:13,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2022-11-22 01:26:13,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 5542. [2022-11-22 01:26:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 5522 states have (on average 3.586019558131112) internal successors, (19802), 5541 states have internal predecessors, (19802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 19802 transitions. [2022-11-22 01:26:13,571 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 19802 transitions. Word has length 3 [2022-11-22 01:26:13,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:13,572 INFO L495 AbstractCegarLoop]: Abstraction has 5542 states and 19802 transitions. [2022-11-22 01:26:13,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 19802 transitions. [2022-11-22 01:26:13,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:26:13,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:13,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:26:13,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:26:13,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:13,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:13,574 INFO L85 PathProgramCache]: Analyzing trace with hash 647780, now seen corresponding path program 1 times [2022-11-22 01:26:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:13,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781049548] [2022-11-22 01:26:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:13,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:13,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781049548] [2022-11-22 01:26:13,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781049548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:13,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:13,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:26:13,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365535476] [2022-11-22 01:26:13,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:13,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:26:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:13,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:26:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:26:13,709 INFO L87 Difference]: Start difference. First operand 5542 states and 19802 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:13,898 INFO L93 Difference]: Finished difference Result 5532 states and 19782 transitions. [2022-11-22 01:26:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:26:13,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 01:26:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:13,953 INFO L225 Difference]: With dead ends: 5532 [2022-11-22 01:26:13,954 INFO L226 Difference]: Without dead ends: 5532 [2022-11-22 01:26:13,955 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:26:13,958 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:13,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:26:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2022-11-22 01:26:14,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 5532. [2022-11-22 01:26:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5513 states have (on average 3.5882459640848903) internal successors, (19782), 5531 states have internal predecessors, (19782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 19782 transitions. [2022-11-22 01:26:14,204 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 19782 transitions. Word has length 3 [2022-11-22 01:26:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:14,205 INFO L495 AbstractCegarLoop]: Abstraction has 5532 states and 19782 transitions. [2022-11-22 01:26:14,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:14,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 19782 transitions. [2022-11-22 01:26:14,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:26:14,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:14,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:26:14,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:26:14,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash 622531939, now seen corresponding path program 1 times [2022-11-22 01:26:14,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:14,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827109240] [2022-11-22 01:26:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:14,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:14,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:14,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827109240] [2022-11-22 01:26:14,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827109240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:14,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:14,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:26:14,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089742342] [2022-11-22 01:26:14,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:14,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:26:14,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:14,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:26:14,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:26:14,304 INFO L87 Difference]: Start difference. First operand 5532 states and 19782 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:14,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:14,589 INFO L93 Difference]: Finished difference Result 5472 states and 19612 transitions. [2022-11-22 01:26:14,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:26:14,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:26:14,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:14,625 INFO L225 Difference]: With dead ends: 5472 [2022-11-22 01:26:14,625 INFO L226 Difference]: Without dead ends: 5472 [2022-11-22 01:26:14,626 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:26:14,627 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:14,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 18 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:26:14,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2022-11-22 01:26:14,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 5472. [2022-11-22 01:26:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5455 states have (on average 3.5952337305224566) internal successors, (19612), 5471 states have internal predecessors, (19612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 19612 transitions. [2022-11-22 01:26:14,940 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 19612 transitions. Word has length 5 [2022-11-22 01:26:14,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:14,941 INFO L495 AbstractCegarLoop]: Abstraction has 5472 states and 19612 transitions. [2022-11-22 01:26:14,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 19612 transitions. [2022-11-22 01:26:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:26:14,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:14,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:26:14,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:26:14,943 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:14,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:14,945 INFO L85 PathProgramCache]: Analyzing trace with hash 622531940, now seen corresponding path program 1 times [2022-11-22 01:26:14,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:14,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468421607] [2022-11-22 01:26:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:15,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:15,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468421607] [2022-11-22 01:26:15,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468421607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:15,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:15,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:26:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580433773] [2022-11-22 01:26:15,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:15,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:26:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:26:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:26:15,111 INFO L87 Difference]: Start difference. First operand 5472 states and 19612 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:15,253 INFO L93 Difference]: Finished difference Result 5412 states and 19442 transitions. [2022-11-22 01:26:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:26:15,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:26:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:15,508 INFO L225 Difference]: With dead ends: 5412 [2022-11-22 01:26:15,508 INFO L226 Difference]: Without dead ends: 5412 [2022-11-22 01:26:15,509 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:26:15,509 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:15,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 18 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:26:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5412 states. [2022-11-22 01:26:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5412 to 5412. [2022-11-22 01:26:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5397 states have (on average 3.602371687974801) internal successors, (19442), 5411 states have internal predecessors, (19442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 19442 transitions. [2022-11-22 01:26:15,770 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 19442 transitions. Word has length 5 [2022-11-22 01:26:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:15,771 INFO L495 AbstractCegarLoop]: Abstraction has 5412 states and 19442 transitions. [2022-11-22 01:26:15,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 19442 transitions. [2022-11-22 01:26:15,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:26:15,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:15,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:15,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:26:15,776 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash 181779943, now seen corresponding path program 1 times [2022-11-22 01:26:15,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:15,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491550042] [2022-11-22 01:26:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:15,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:15,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:15,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491550042] [2022-11-22 01:26:15,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491550042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:15,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:15,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:26:15,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879869398] [2022-11-22 01:26:15,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:26:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:26:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:26:15,894 INFO L87 Difference]: Start difference. First operand 5412 states and 19442 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:16,300 INFO L93 Difference]: Finished difference Result 6402 states and 22350 transitions. [2022-11-22 01:26:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:26:16,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:26:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:16,349 INFO L225 Difference]: With dead ends: 6402 [2022-11-22 01:26:16,349 INFO L226 Difference]: Without dead ends: 6388 [2022-11-22 01:26:16,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:26:16,351 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 140 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:16,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 43 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:26:16,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2022-11-22 01:26:16,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 6121. [2022-11-22 01:26:16,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6121 states, 6106 states have (on average 3.5461840812315755) internal successors, (21653), 6120 states have internal predecessors, (21653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:16,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6121 states to 6121 states and 21653 transitions. [2022-11-22 01:26:16,696 INFO L78 Accepts]: Start accepts. Automaton has 6121 states and 21653 transitions. Word has length 8 [2022-11-22 01:26:16,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:16,696 INFO L495 AbstractCegarLoop]: Abstraction has 6121 states and 21653 transitions. [2022-11-22 01:26:16,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 6121 states and 21653 transitions. [2022-11-22 01:26:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:26:16,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:16,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:16,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:26:16,706 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:16,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:16,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1873293585, now seen corresponding path program 1 times [2022-11-22 01:26:16,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:16,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795480377] [2022-11-22 01:26:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:16,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:16,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:16,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795480377] [2022-11-22 01:26:16,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795480377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:16,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:16,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:26:16,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121967757] [2022-11-22 01:26:16,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:16,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:26:16,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:16,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:26:16,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:26:16,886 INFO L87 Difference]: Start difference. First operand 6121 states and 21653 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:17,285 INFO L93 Difference]: Finished difference Result 7321 states and 25711 transitions. [2022-11-22 01:26:17,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:26:17,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-22 01:26:17,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:17,409 INFO L225 Difference]: With dead ends: 7321 [2022-11-22 01:26:17,409 INFO L226 Difference]: Without dead ends: 7321 [2022-11-22 01:26:17,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:26:17,410 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 121 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:17,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 42 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:26:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7321 states. [2022-11-22 01:26:17,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7321 to 6493. [2022-11-22 01:26:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6493 states, 6478 states have (on average 3.535196048163013) internal successors, (22901), 6492 states have internal predecessors, (22901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6493 states to 6493 states and 22901 transitions. [2022-11-22 01:26:17,623 INFO L78 Accepts]: Start accepts. Automaton has 6493 states and 22901 transitions. Word has length 10 [2022-11-22 01:26:17,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:17,623 INFO L495 AbstractCegarLoop]: Abstraction has 6493 states and 22901 transitions. [2022-11-22 01:26:17,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6493 states and 22901 transitions. [2022-11-22 01:26:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:26:17,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:17,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:17,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:26:17,625 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:17,626 INFO L85 PathProgramCache]: Analyzing trace with hash -134638277, now seen corresponding path program 1 times [2022-11-22 01:26:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:17,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689904354] [2022-11-22 01:26:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:17,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:17,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:17,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689904354] [2022-11-22 01:26:17,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689904354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:17,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:17,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:26:17,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055503023] [2022-11-22 01:26:17,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:17,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:26:17,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:26:17,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:26:17,818 INFO L87 Difference]: Start difference. First operand 6493 states and 22901 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:17,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:17,943 INFO L93 Difference]: Finished difference Result 4839 states and 13469 transitions. [2022-11-22 01:26:17,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:26:17,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:26:17,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:17,964 INFO L225 Difference]: With dead ends: 4839 [2022-11-22 01:26:17,964 INFO L226 Difference]: Without dead ends: 4835 [2022-11-22 01:26:17,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:26:17,966 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:17,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 12 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:26:17,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4835 states. [2022-11-22 01:26:18,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4835 to 4257. [2022-11-22 01:26:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4257 states, 4228 states have (on average 2.8285241248817408) internal successors, (11959), 4256 states have internal predecessors, (11959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:18,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4257 states to 4257 states and 11959 transitions. [2022-11-22 01:26:18,104 INFO L78 Accepts]: Start accepts. Automaton has 4257 states and 11959 transitions. Word has length 11 [2022-11-22 01:26:18,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:18,105 INFO L495 AbstractCegarLoop]: Abstraction has 4257 states and 11959 transitions. [2022-11-22 01:26:18,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:18,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4257 states and 11959 transitions. [2022-11-22 01:26:18,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:26:18,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:18,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:18,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:26:18,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2063680261, now seen corresponding path program 1 times [2022-11-22 01:26:18,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:18,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324889885] [2022-11-22 01:26:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:18,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:18,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:18,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324889885] [2022-11-22 01:26:18,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324889885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:18,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:18,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:26:18,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755929862] [2022-11-22 01:26:18,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:18,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:26:18,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:18,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:26:18,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:26:18,238 INFO L87 Difference]: Start difference. First operand 4257 states and 11959 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:18,499 INFO L93 Difference]: Finished difference Result 4410 states and 12409 transitions. [2022-11-22 01:26:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:26:18,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 01:26:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:18,516 INFO L225 Difference]: With dead ends: 4410 [2022-11-22 01:26:18,516 INFO L226 Difference]: Without dead ends: 4331 [2022-11-22 01:26:18,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:26:18,518 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 121 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:18,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 37 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:26:18,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2022-11-22 01:26:18,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 4286. [2022-11-22 01:26:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4257 states have (on average 2.8278130138595254) internal successors, (12038), 4285 states have internal predecessors, (12038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 12038 transitions. [2022-11-22 01:26:18,753 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 12038 transitions. Word has length 12 [2022-11-22 01:26:18,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:18,754 INFO L495 AbstractCegarLoop]: Abstraction has 4286 states and 12038 transitions. [2022-11-22 01:26:18,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 12038 transitions. [2022-11-22 01:26:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:26:18,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:18,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:18,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:26:18,757 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:18,758 INFO L85 PathProgramCache]: Analyzing trace with hash 361211738, now seen corresponding path program 1 times [2022-11-22 01:26:18,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:18,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983709606] [2022-11-22 01:26:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:18,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:18,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:18,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983709606] [2022-11-22 01:26:18,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983709606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:18,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:18,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:26:18,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765682528] [2022-11-22 01:26:18,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:18,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:26:18,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:18,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:26:18,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:26:18,901 INFO L87 Difference]: Start difference. First operand 4286 states and 12038 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:19,321 INFO L93 Difference]: Finished difference Result 5033 states and 13929 transitions. [2022-11-22 01:26:19,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:26:19,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 01:26:19,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:19,341 INFO L225 Difference]: With dead ends: 5033 [2022-11-22 01:26:19,342 INFO L226 Difference]: Without dead ends: 5016 [2022-11-22 01:26:19,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:26:19,343 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 153 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:19,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 47 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:26:19,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5016 states. [2022-11-22 01:26:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5016 to 4308. [2022-11-22 01:26:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4281 states have (on average 2.836720392431675) internal successors, (12144), 4307 states have internal predecessors, (12144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 12144 transitions. [2022-11-22 01:26:19,509 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 12144 transitions. Word has length 13 [2022-11-22 01:26:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:19,510 INFO L495 AbstractCegarLoop]: Abstraction has 4308 states and 12144 transitions. [2022-11-22 01:26:19,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 12144 transitions. [2022-11-22 01:26:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:26:19,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:19,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:19,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:26:19,513 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1517332998, now seen corresponding path program 1 times [2022-11-22 01:26:19,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:19,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45181945] [2022-11-22 01:26:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:19,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:19,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:19,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45181945] [2022-11-22 01:26:19,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45181945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:19,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:19,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:26:19,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6995567] [2022-11-22 01:26:19,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:19,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:26:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:19,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:26:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:26:19,601 INFO L87 Difference]: Start difference. First operand 4308 states and 12144 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:19,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:19,751 INFO L93 Difference]: Finished difference Result 3611 states and 9821 transitions. [2022-11-22 01:26:19,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:26:19,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 01:26:19,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:19,767 INFO L225 Difference]: With dead ends: 3611 [2022-11-22 01:26:19,767 INFO L226 Difference]: Without dead ends: 3611 [2022-11-22 01:26:19,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:26:19,768 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 49 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:19,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 36 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:26:19,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2022-11-22 01:26:19,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 3611. [2022-11-22 01:26:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 3588 states have (on average 2.7371794871794872) internal successors, (9821), 3610 states have internal predecessors, (9821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 9821 transitions. [2022-11-22 01:26:19,863 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 9821 transitions. Word has length 13 [2022-11-22 01:26:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:19,864 INFO L495 AbstractCegarLoop]: Abstraction has 3611 states and 9821 transitions. [2022-11-22 01:26:19,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 9821 transitions. [2022-11-22 01:26:19,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:26:19,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:19,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:19,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:26:19,866 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:19,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1517332932, now seen corresponding path program 1 times [2022-11-22 01:26:19,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:19,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389979047] [2022-11-22 01:26:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:19,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:20,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:20,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389979047] [2022-11-22 01:26:20,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389979047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:20,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:20,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:26:20,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77041799] [2022-11-22 01:26:20,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:20,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:26:20,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:26:20,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:26:20,298 INFO L87 Difference]: Start difference. First operand 3611 states and 9821 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:20,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:20,384 INFO L93 Difference]: Finished difference Result 2914 states and 7498 transitions. [2022-11-22 01:26:20,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:26:20,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 01:26:20,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:20,392 INFO L225 Difference]: With dead ends: 2914 [2022-11-22 01:26:20,393 INFO L226 Difference]: Without dead ends: 2614 [2022-11-22 01:26:20,393 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:26:20,394 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:20,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 18 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:26:20,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2022-11-22 01:26:20,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2614. [2022-11-22 01:26:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 2595 states have (on average 2.5491329479768785) internal successors, (6615), 2613 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 6615 transitions. [2022-11-22 01:26:20,456 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 6615 transitions. Word has length 13 [2022-11-22 01:26:20,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:20,457 INFO L495 AbstractCegarLoop]: Abstraction has 2614 states and 6615 transitions. [2022-11-22 01:26:20,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 6615 transitions. [2022-11-22 01:26:20,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 01:26:20,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:20,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:20,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:26:20,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:20,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1786410556, now seen corresponding path program 1 times [2022-11-22 01:26:20,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:20,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384120626] [2022-11-22 01:26:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:20,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:20,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:20,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384120626] [2022-11-22 01:26:20,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384120626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:20,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:20,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:26:20,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203887588] [2022-11-22 01:26:20,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:20,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:26:20,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:26:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:26:20,712 INFO L87 Difference]: Start difference. First operand 2614 states and 6615 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:20,805 INFO L93 Difference]: Finished difference Result 1281 states and 2680 transitions. [2022-11-22 01:26:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:26:20,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 01:26:20,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:20,809 INFO L225 Difference]: With dead ends: 1281 [2022-11-22 01:26:20,809 INFO L226 Difference]: Without dead ends: 1222 [2022-11-22 01:26:20,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:26:20,811 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:20,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 11 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:26:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-11-22 01:26:20,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1194. [2022-11-22 01:26:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1180 states have (on average 2.1313559322033897) internal successors, (2515), 1193 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 2515 transitions. [2022-11-22 01:26:20,846 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 2515 transitions. Word has length 15 [2022-11-22 01:26:20,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:20,847 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 2515 transitions. [2022-11-22 01:26:20,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 2515 transitions. [2022-11-22 01:26:20,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 01:26:20,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:20,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:20,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:26:20,849 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:20,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:20,850 INFO L85 PathProgramCache]: Analyzing trace with hash -826055695, now seen corresponding path program 1 times [2022-11-22 01:26:20,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:20,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51908020] [2022-11-22 01:26:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:20,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:21,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:21,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51908020] [2022-11-22 01:26:21,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51908020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:21,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:21,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:26:21,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220540494] [2022-11-22 01:26:21,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:21,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:26:21,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:21,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:26:21,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:26:21,027 INFO L87 Difference]: Start difference. First operand 1194 states and 2515 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:21,491 INFO L93 Difference]: Finished difference Result 1338 states and 2744 transitions. [2022-11-22 01:26:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 01:26:21,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-22 01:26:21,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:21,497 INFO L225 Difference]: With dead ends: 1338 [2022-11-22 01:26:21,497 INFO L226 Difference]: Without dead ends: 1266 [2022-11-22 01:26:21,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:26:21,499 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 176 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:21,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 43 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:26:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-11-22 01:26:21,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1111. [2022-11-22 01:26:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1100 states have (on average 2.100909090909091) internal successors, (2311), 1110 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2311 transitions. [2022-11-22 01:26:21,538 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2311 transitions. Word has length 16 [2022-11-22 01:26:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:21,538 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 2311 transitions. [2022-11-22 01:26:21,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2311 transitions. [2022-11-22 01:26:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 01:26:21,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:21,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:21,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:26:21,541 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash 469233895, now seen corresponding path program 1 times [2022-11-22 01:26:21,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:21,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199163596] [2022-11-22 01:26:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:21,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:21,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:21,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199163596] [2022-11-22 01:26:21,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199163596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:21,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:21,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:26:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605977523] [2022-11-22 01:26:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:21,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:26:21,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:21,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:26:21,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:26:21,747 INFO L87 Difference]: Start difference. First operand 1111 states and 2311 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:22,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:22,227 INFO L93 Difference]: Finished difference Result 1265 states and 2636 transitions. [2022-11-22 01:26:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 01:26:22,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-22 01:26:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:22,231 INFO L225 Difference]: With dead ends: 1265 [2022-11-22 01:26:22,232 INFO L226 Difference]: Without dead ends: 1179 [2022-11-22 01:26:22,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:26:22,233 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 151 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:22,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 44 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:26:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-11-22 01:26:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1040. [2022-11-22 01:26:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1034 states have (on average 2.0705996131528046) internal successors, (2141), 1039 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:22,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 2141 transitions. [2022-11-22 01:26:22,266 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 2141 transitions. Word has length 19 [2022-11-22 01:26:22,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:22,267 INFO L495 AbstractCegarLoop]: Abstraction has 1040 states and 2141 transitions. [2022-11-22 01:26:22,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:22,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 2141 transitions. [2022-11-22 01:26:22,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 01:26:22,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:22,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:22,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 01:26:22,270 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:22,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1131114101, now seen corresponding path program 1 times [2022-11-22 01:26:22,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:22,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967365649] [2022-11-22 01:26:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:22,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:22,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:22,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967365649] [2022-11-22 01:26:22,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967365649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:22,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:22,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:26:22,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180284316] [2022-11-22 01:26:22,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:22,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:26:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:26:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:26:22,478 INFO L87 Difference]: Start difference. First operand 1040 states and 2141 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:22,568 INFO L93 Difference]: Finished difference Result 417 states and 711 transitions. [2022-11-22 01:26:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:26:22,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-22 01:26:22,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:22,570 INFO L225 Difference]: With dead ends: 417 [2022-11-22 01:26:22,570 INFO L226 Difference]: Without dead ends: 344 [2022-11-22 01:26:22,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:26:22,572 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:22,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 5 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:26:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-22 01:26:22,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 306. [2022-11-22 01:26:22,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.7836065573770492) internal successors, (544), 305 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 544 transitions. [2022-11-22 01:26:22,581 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 544 transitions. Word has length 19 [2022-11-22 01:26:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:22,581 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 544 transitions. [2022-11-22 01:26:22,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:22,582 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 544 transitions. [2022-11-22 01:26:22,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 01:26:22,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:22,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:22,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:26:22,583 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-22 01:26:22,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:22,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1549655889, now seen corresponding path program 1 times [2022-11-22 01:26:22,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:22,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902638592] [2022-11-22 01:26:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:22,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:26:22,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:22,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902638592] [2022-11-22 01:26:22,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902638592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:22,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:22,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:26:22,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589336833] [2022-11-22 01:26:22,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:22,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:26:22,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:22,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:26:22,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:26:22,763 INFO L87 Difference]: Start difference. First operand 306 states and 544 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:22,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:22,961 INFO L93 Difference]: Finished difference Result 281 states and 494 transitions. [2022-11-22 01:26:22,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:26:22,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 01:26:22,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:22,962 INFO L225 Difference]: With dead ends: 281 [2022-11-22 01:26:22,962 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:26:22,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:26:22,963 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:22,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 18 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:26:22,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:26:22,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:26:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:26:22,964 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-11-22 01:26:22,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:22,964 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:26:22,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:26:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:26:22,965 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:26:22,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (15 of 16 remaining) [2022-11-22 01:26:22,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 16 remaining) [2022-11-22 01:26:22,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2022-11-22 01:26:22,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2022-11-22 01:26:22,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2022-11-22 01:26:22,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2022-11-22 01:26:22,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2022-11-22 01:26:22,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2022-11-22 01:26:22,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 16 remaining) [2022-11-22 01:26:22,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (6 of 16 remaining) [2022-11-22 01:26:22,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (5 of 16 remaining) [2022-11-22 01:26:22,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2022-11-22 01:26:22,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 16 remaining) [2022-11-22 01:26:22,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 16 remaining) [2022-11-22 01:26:22,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 16 remaining) [2022-11-22 01:26:22,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2022-11-22 01:26:22,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 01:26:22,974 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:22,980 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 01:26:22,980 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:26:22,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:26:22 BasicIcfg [2022-11-22 01:26:22,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:26:22,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:26:22,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:26:22,984 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:26:22,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:26:02" (3/4) ... [2022-11-22 01:26:22,988 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:26:22,995 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2022-11-22 01:26:22,995 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2022-11-22 01:26:22,996 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-22 01:26:23,001 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-22 01:26:23,001 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-22 01:26:23,002 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 01:26:23,002 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:26:23,038 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:26:23,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:26:23,039 INFO L158 Benchmark]: Toolchain (without parser) took 21810.05ms. Allocated memory was 165.7MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 135.5MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 670.6MB. Max. memory is 16.1GB. [2022-11-22 01:26:23,040 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory was 80.1MB in the beginning and 79.9MB in the end (delta: 151.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:26:23,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.01ms. Allocated memory is still 165.7MB. Free memory was 135.2MB in the beginning and 115.4MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-22 01:26:23,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.66ms. Allocated memory is still 165.7MB. Free memory was 115.4MB in the beginning and 113.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:26:23,041 INFO L158 Benchmark]: Boogie Preprocessor took 32.97ms. Allocated memory is still 165.7MB. Free memory was 113.1MB in the beginning and 111.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:26:23,041 INFO L158 Benchmark]: RCFGBuilder took 653.37ms. Allocated memory is still 165.7MB. Free memory was 111.5MB in the beginning and 93.2MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-22 01:26:23,042 INFO L158 Benchmark]: TraceAbstraction took 20427.73ms. Allocated memory was 165.7MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 92.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 624.4MB. Max. memory is 16.1GB. [2022-11-22 01:26:23,042 INFO L158 Benchmark]: Witness Printer took 54.60ms. Allocated memory is still 2.0GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:26:23,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory was 80.1MB in the beginning and 79.9MB in the end (delta: 151.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 579.01ms. Allocated memory is still 165.7MB. Free memory was 135.2MB in the beginning and 115.4MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.66ms. Allocated memory is still 165.7MB. Free memory was 115.4MB in the beginning and 113.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.97ms. Allocated memory is still 165.7MB. Free memory was 113.1MB in the beginning and 111.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 653.37ms. Allocated memory is still 165.7MB. Free memory was 111.5MB in the beginning and 93.2MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 20427.73ms. Allocated memory was 165.7MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 92.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 624.4MB. Max. memory is 16.1GB. * Witness Printer took 54.60ms. Allocated memory is still 2.0GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3s, 182 PlacesBefore, 56 PlacesAfterwards, 177 TransitionsBefore, 48 TransitionsAfterwards, 10466 CoEnabledTransitionPairs, 9 FixpointIterations, 50 TrivialSequentialCompositions, 111 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 182 TotalNumberOfCompositions, 24195 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13716, independent: 13276, independent conditional: 0, independent unconditional: 13276, dependent: 440, dependent conditional: 0, dependent unconditional: 440, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7289, independent: 7207, independent conditional: 0, independent unconditional: 7207, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7289, independent: 7136, independent conditional: 0, independent unconditional: 7136, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 153, independent: 71, independent conditional: 0, independent unconditional: 71, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 402, independent: 142, independent conditional: 0, independent unconditional: 142, dependent: 259, dependent conditional: 0, dependent unconditional: 259, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13716, independent: 6069, independent conditional: 0, independent unconditional: 6069, dependent: 358, dependent conditional: 0, dependent unconditional: 358, unknown: 7289, unknown conditional: 0, unknown unconditional: 7289] , Statistics on independence cache: Total cache size (in pairs): 474, Positive cache size: 435, Positive conditional cache size: 0, Positive unconditional cache size: 435, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 723]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 247 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 20.2s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1242 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1242 mSDsluCounter, 438 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 245 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2414 IncrementalHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 193 mSDtfsCounter, 2414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6493occurred in iteration=7, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 17 MinimizatonAttempts, 2786 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 1096 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 - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 01:26:23,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dad9f9-a43f-4078-8dca-15b560989586/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE