./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ca87716ddde5218a0bb0d9c4d67f4e1c636cb2c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:53:07,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:53:07,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:53:07,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:53:07,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:53:07,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:53:07,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:53:07,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:53:07,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:53:07,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:53:07,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:53:07,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:53:07,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:53:07,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:53:07,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:53:07,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:53:07,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:53:07,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:53:07,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:53:07,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:53:07,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:53:07,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:53:07,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:53:07,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:53:07,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:53:07,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:53:07,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:53:07,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:53:07,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:53:07,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:53:07,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:53:07,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:53:07,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:53:07,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:53:07,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:53:07,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:53:07,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:53:07,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:53:07,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:53:07,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:53:07,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:53:07,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2020-12-09 07:53:07,990 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:53:07,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:53:07,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:53:07,991 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:53:07,991 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:53:07,991 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:53:07,992 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:53:07,992 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:53:07,992 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:53:07,992 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:53:07,992 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:53:07,992 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:53:07,993 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:53:07,993 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:53:07,993 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:53:07,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 07:53:07,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 07:53:07,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:53:07,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:53:07,994 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 07:53:07,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:53:07,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:53:07,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:53:07,995 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 07:53:07,995 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 07:53:07,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:53:07,995 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:53:07,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:53:07,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:53:07,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:53:07,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:53:07,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:53:07,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:53:07,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:53:07,997 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:53:07,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:53:07,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:53:07,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:53:07,997 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ca87716ddde5218a0bb0d9c4d67f4e1c636cb2c [2020-12-09 07:53:08,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:53:08,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:53:08,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:53:08,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:53:08,202 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:53:08,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/../../sv-benchmarks/c/forester-heap/sll-circular-2.i [2020-12-09 07:53:08,245 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/data/2db877921/103292b45b7b43af9c2a60ad15fa3f83/FLAG44687d39d [2020-12-09 07:53:08,647 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:53:08,647 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/sv-benchmarks/c/forester-heap/sll-circular-2.i [2020-12-09 07:53:08,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/data/2db877921/103292b45b7b43af9c2a60ad15fa3f83/FLAG44687d39d [2020-12-09 07:53:08,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/data/2db877921/103292b45b7b43af9c2a60ad15fa3f83 [2020-12-09 07:53:08,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:53:08,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:53:08,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:53:08,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:53:08,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:53:08,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:53:08" (1/1) ... [2020-12-09 07:53:08,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d065885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08, skipping insertion in model container [2020-12-09 07:53:08,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:53:08" (1/1) ... [2020-12-09 07:53:08,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:53:08,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:53:08,869 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/sv-benchmarks/c/forester-heap/sll-circular-2.i[22324,22337] [2020-12-09 07:53:08,873 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/sv-benchmarks/c/forester-heap/sll-circular-2.i[22430,22443] [2020-12-09 07:53:08,874 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/sv-benchmarks/c/forester-heap/sll-circular-2.i[22554,22567] [2020-12-09 07:53:08,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:53:08,883 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:53:08,908 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/sv-benchmarks/c/forester-heap/sll-circular-2.i[22324,22337] [2020-12-09 07:53:08,909 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/sv-benchmarks/c/forester-heap/sll-circular-2.i[22430,22443] [2020-12-09 07:53:08,910 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/sv-benchmarks/c/forester-heap/sll-circular-2.i[22554,22567] [2020-12-09 07:53:08,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:53:08,950 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:53:08,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08 WrapperNode [2020-12-09 07:53:08,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:53:08,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:53:08,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:53:08,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:53:08,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08" (1/1) ... [2020-12-09 07:53:08,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08" (1/1) ... [2020-12-09 07:53:08,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:53:08,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:53:08,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:53:08,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:53:08,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08" (1/1) ... [2020-12-09 07:53:08,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08" (1/1) ... [2020-12-09 07:53:08,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08" (1/1) ... [2020-12-09 07:53:08,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08" (1/1) ... [2020-12-09 07:53:09,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08" (1/1) ... [2020-12-09 07:53:09,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08" (1/1) ... [2020-12-09 07:53:09,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08" (1/1) ... [2020-12-09 07:53:09,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:53:09,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:53:09,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:53:09,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:53:09,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:53:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 07:53:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 07:53:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 07:53:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 07:53:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:53:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 07:53:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 07:53:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:53:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:53:09,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:53:09,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:53:09,452 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 07:53:09,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:53:09 BoogieIcfgContainer [2020-12-09 07:53:09,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:53:09,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:53:09,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:53:09,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:53:09,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:53:08" (1/3) ... [2020-12-09 07:53:09,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696de986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:53:09, skipping insertion in model container [2020-12-09 07:53:09,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:53:08" (2/3) ... [2020-12-09 07:53:09,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696de986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:53:09, skipping insertion in model container [2020-12-09 07:53:09,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:53:09" (3/3) ... [2020-12-09 07:53:09,462 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-12-09 07:53:09,475 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:53:09,478 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 46 error locations. [2020-12-09 07:53:09,487 INFO L253 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2020-12-09 07:53:09,503 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:53:09,504 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 07:53:09,504 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:53:09,504 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:53:09,504 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:53:09,504 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:53:09,504 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:53:09,504 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:53:09,519 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-09 07:53:09,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 07:53:09,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:09,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 07:53:09,525 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:09,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:09,529 INFO L82 PathProgramCache]: Analyzing trace with hash 7010, now seen corresponding path program 1 times [2020-12-09 07:53:09,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:09,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299266687] [2020-12-09 07:53:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:09,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299266687] [2020-12-09 07:53:09,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:09,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 07:53:09,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461981167] [2020-12-09 07:53:09,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:53:09,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:09,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:53:09,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:53:09,668 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2020-12-09 07:53:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:09,748 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2020-12-09 07:53:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:53:09,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-12-09 07:53:09,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:09,757 INFO L225 Difference]: With dead ends: 96 [2020-12-09 07:53:09,757 INFO L226 Difference]: Without dead ends: 95 [2020-12-09 07:53:09,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:53:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-09 07:53:09,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2020-12-09 07:53:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-09 07:53:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-12-09 07:53:09,784 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 2 [2020-12-09 07:53:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:09,784 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-12-09 07:53:09,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:53:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-12-09 07:53:09,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 07:53:09,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:09,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 07:53:09,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:53:09,785 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:09,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:09,786 INFO L82 PathProgramCache]: Analyzing trace with hash 7011, now seen corresponding path program 1 times [2020-12-09 07:53:09,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:09,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853656319] [2020-12-09 07:53:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:09,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853656319] [2020-12-09 07:53:09,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:09,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 07:53:09,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637420786] [2020-12-09 07:53:09,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:53:09,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:09,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:53:09,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:53:09,820 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 3 states. [2020-12-09 07:53:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:09,873 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2020-12-09 07:53:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:53:09,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-12-09 07:53:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:09,874 INFO L225 Difference]: With dead ends: 93 [2020-12-09 07:53:09,874 INFO L226 Difference]: Without dead ends: 93 [2020-12-09 07:53:09,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:53:09,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-09 07:53:09,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-12-09 07:53:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-09 07:53:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-12-09 07:53:09,881 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 2 [2020-12-09 07:53:09,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:09,881 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-12-09 07:53:09,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:53:09,881 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-12-09 07:53:09,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:53:09,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:09,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:53:09,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:53:09,882 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:09,882 INFO L82 PathProgramCache]: Analyzing trace with hash -2111003649, now seen corresponding path program 1 times [2020-12-09 07:53:09,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:09,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926472113] [2020-12-09 07:53:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:09,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926472113] [2020-12-09 07:53:09,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:09,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:53:09,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352507031] [2020-12-09 07:53:09,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:53:09,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:09,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:53:09,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:53:09,923 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 4 states. [2020-12-09 07:53:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:10,009 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-12-09 07:53:10,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:53:10,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 07:53:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:10,010 INFO L225 Difference]: With dead ends: 79 [2020-12-09 07:53:10,010 INFO L226 Difference]: Without dead ends: 79 [2020-12-09 07:53:10,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:53:10,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-09 07:53:10,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2020-12-09 07:53:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 07:53:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-12-09 07:53:10,017 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 6 [2020-12-09 07:53:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:10,017 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-12-09 07:53:10,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:53:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-12-09 07:53:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:53:10,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:10,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:53:10,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:53:10,018 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:10,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:10,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2111003648, now seen corresponding path program 1 times [2020-12-09 07:53:10,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:10,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374174185] [2020-12-09 07:53:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:10,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374174185] [2020-12-09 07:53:10,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:10,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:53:10,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401077285] [2020-12-09 07:53:10,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:53:10,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:10,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:53:10,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:53:10,074 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 4 states. [2020-12-09 07:53:10,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:10,159 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-12-09 07:53:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:53:10,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 07:53:10,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:10,160 INFO L225 Difference]: With dead ends: 87 [2020-12-09 07:53:10,160 INFO L226 Difference]: Without dead ends: 87 [2020-12-09 07:53:10,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:53:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-09 07:53:10,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2020-12-09 07:53:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-09 07:53:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2020-12-09 07:53:10,165 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 6 [2020-12-09 07:53:10,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:10,165 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2020-12-09 07:53:10,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:53:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2020-12-09 07:53:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 07:53:10,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:10,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:10,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:53:10,166 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:10,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1449928007, now seen corresponding path program 1 times [2020-12-09 07:53:10,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:10,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988697657] [2020-12-09 07:53:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:10,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988697657] [2020-12-09 07:53:10,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:10,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:53:10,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103979445] [2020-12-09 07:53:10,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:53:10,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:10,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:53:10,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:53:10,210 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 5 states. [2020-12-09 07:53:10,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:10,349 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-12-09 07:53:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:53:10,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 07:53:10,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:10,350 INFO L225 Difference]: With dead ends: 119 [2020-12-09 07:53:10,350 INFO L226 Difference]: Without dead ends: 119 [2020-12-09 07:53:10,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:53:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-09 07:53:10,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 74. [2020-12-09 07:53:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 07:53:10,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-12-09 07:53:10,355 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 8 [2020-12-09 07:53:10,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:10,355 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-12-09 07:53:10,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:53:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-12-09 07:53:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 07:53:10,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:10,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:10,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 07:53:10,356 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:10,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:10,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1449928006, now seen corresponding path program 1 times [2020-12-09 07:53:10,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:10,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664503852] [2020-12-09 07:53:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:10,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664503852] [2020-12-09 07:53:10,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:10,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:53:10,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712816205] [2020-12-09 07:53:10,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:53:10,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:10,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:53:10,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:53:10,402 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 5 states. [2020-12-09 07:53:10,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:10,566 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2020-12-09 07:53:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:53:10,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 07:53:10,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:10,567 INFO L225 Difference]: With dead ends: 116 [2020-12-09 07:53:10,567 INFO L226 Difference]: Without dead ends: 116 [2020-12-09 07:53:10,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:53:10,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-09 07:53:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 64. [2020-12-09 07:53:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-09 07:53:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2020-12-09 07:53:10,571 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 8 [2020-12-09 07:53:10,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:10,571 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2020-12-09 07:53:10,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:53:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2020-12-09 07:53:10,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 07:53:10,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:10,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:10,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 07:53:10,572 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:10,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:10,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1998397112, now seen corresponding path program 1 times [2020-12-09 07:53:10,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:10,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251895719] [2020-12-09 07:53:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:10,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251895719] [2020-12-09 07:53:10,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:10,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 07:53:10,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023541727] [2020-12-09 07:53:10,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 07:53:10,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:10,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 07:53:10,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:53:10,667 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 7 states. [2020-12-09 07:53:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:10,820 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2020-12-09 07:53:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 07:53:10,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-12-09 07:53:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:10,821 INFO L225 Difference]: With dead ends: 144 [2020-12-09 07:53:10,821 INFO L226 Difference]: Without dead ends: 144 [2020-12-09 07:53:10,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 07:53:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-09 07:53:10,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 69. [2020-12-09 07:53:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 07:53:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-12-09 07:53:10,826 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 9 [2020-12-09 07:53:10,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:10,826 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-12-09 07:53:10,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 07:53:10,826 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-12-09 07:53:10,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 07:53:10,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:10,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:10,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 07:53:10,827 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:10,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:10,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1820764166, now seen corresponding path program 1 times [2020-12-09 07:53:10,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:10,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617262374] [2020-12-09 07:53:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:10,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617262374] [2020-12-09 07:53:10,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:10,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:53:10,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571504850] [2020-12-09 07:53:10,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 07:53:10,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:10,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 07:53:10,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:53:10,903 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 7 states. [2020-12-09 07:53:11,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:11,078 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2020-12-09 07:53:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 07:53:11,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-12-09 07:53:11,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:11,079 INFO L225 Difference]: With dead ends: 114 [2020-12-09 07:53:11,079 INFO L226 Difference]: Without dead ends: 114 [2020-12-09 07:53:11,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 07:53:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-09 07:53:11,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 84. [2020-12-09 07:53:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-09 07:53:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2020-12-09 07:53:11,084 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 10 [2020-12-09 07:53:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:11,084 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2020-12-09 07:53:11,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 07:53:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2020-12-09 07:53:11,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 07:53:11,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:11,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:11,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 07:53:11,085 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:11,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:11,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1820764165, now seen corresponding path program 1 times [2020-12-09 07:53:11,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:11,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037960090] [2020-12-09 07:53:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:11,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037960090] [2020-12-09 07:53:11,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:11,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:53:11,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338462142] [2020-12-09 07:53:11,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 07:53:11,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:11,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 07:53:11,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:53:11,181 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand 7 states. [2020-12-09 07:53:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:11,396 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2020-12-09 07:53:11,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 07:53:11,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-12-09 07:53:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:11,397 INFO L225 Difference]: With dead ends: 138 [2020-12-09 07:53:11,397 INFO L226 Difference]: Without dead ends: 138 [2020-12-09 07:53:11,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 07:53:11,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-09 07:53:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 98. [2020-12-09 07:53:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-09 07:53:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 126 transitions. [2020-12-09 07:53:11,406 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 126 transitions. Word has length 10 [2020-12-09 07:53:11,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:11,406 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 126 transitions. [2020-12-09 07:53:11,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 07:53:11,407 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 126 transitions. [2020-12-09 07:53:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 07:53:11,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:11,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:11,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 07:53:11,408 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:11,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1139164499, now seen corresponding path program 1 times [2020-12-09 07:53:11,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:11,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615980463] [2020-12-09 07:53:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:11,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615980463] [2020-12-09 07:53:11,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:11,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:53:11,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705679348] [2020-12-09 07:53:11,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:53:11,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:11,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:53:11,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:53:11,445 INFO L87 Difference]: Start difference. First operand 98 states and 126 transitions. Second operand 5 states. [2020-12-09 07:53:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:11,553 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2020-12-09 07:53:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:53:11,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 07:53:11,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:11,554 INFO L225 Difference]: With dead ends: 128 [2020-12-09 07:53:11,554 INFO L226 Difference]: Without dead ends: 128 [2020-12-09 07:53:11,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:53:11,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-12-09 07:53:11,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 96. [2020-12-09 07:53:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-09 07:53:11,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 124 transitions. [2020-12-09 07:53:11,557 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 124 transitions. Word has length 12 [2020-12-09 07:53:11,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:11,558 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 124 transitions. [2020-12-09 07:53:11,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:53:11,558 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 124 transitions. [2020-12-09 07:53:11,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 07:53:11,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:11,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:11,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 07:53:11,558 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:11,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:11,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1243211530, now seen corresponding path program 1 times [2020-12-09 07:53:11,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:11,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706516393] [2020-12-09 07:53:11,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:11,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706516393] [2020-12-09 07:53:11,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:11,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 07:53:11,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787486020] [2020-12-09 07:53:11,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:53:11,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:11,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:53:11,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:53:11,652 INFO L87 Difference]: Start difference. First operand 96 states and 124 transitions. Second operand 8 states. [2020-12-09 07:53:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:11,929 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2020-12-09 07:53:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 07:53:11,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-12-09 07:53:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:11,930 INFO L225 Difference]: With dead ends: 127 [2020-12-09 07:53:11,930 INFO L226 Difference]: Without dead ends: 127 [2020-12-09 07:53:11,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-09 07:53:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-09 07:53:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 96. [2020-12-09 07:53:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-09 07:53:11,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 123 transitions. [2020-12-09 07:53:11,933 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 123 transitions. Word has length 13 [2020-12-09 07:53:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:11,933 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 123 transitions. [2020-12-09 07:53:11,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:53:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 123 transitions. [2020-12-09 07:53:11,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 07:53:11,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:11,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:11,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 07:53:11,934 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:11,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:11,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1243211529, now seen corresponding path program 1 times [2020-12-09 07:53:11,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:11,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020353358] [2020-12-09 07:53:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:12,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020353358] [2020-12-09 07:53:12,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:12,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:53:12,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369144471] [2020-12-09 07:53:12,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 07:53:12,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:12,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 07:53:12,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:53:12,036 INFO L87 Difference]: Start difference. First operand 96 states and 123 transitions. Second operand 7 states. [2020-12-09 07:53:12,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:12,256 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2020-12-09 07:53:12,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 07:53:12,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-09 07:53:12,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:12,257 INFO L225 Difference]: With dead ends: 130 [2020-12-09 07:53:12,257 INFO L226 Difference]: Without dead ends: 130 [2020-12-09 07:53:12,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-09 07:53:12,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-09 07:53:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 96. [2020-12-09 07:53:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-09 07:53:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2020-12-09 07:53:12,261 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 13 [2020-12-09 07:53:12,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:12,261 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2020-12-09 07:53:12,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 07:53:12,262 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2020-12-09 07:53:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 07:53:12,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:12,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:12,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 07:53:12,263 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:12,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:12,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1263288390, now seen corresponding path program 1 times [2020-12-09 07:53:12,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:12,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143785584] [2020-12-09 07:53:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:12,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143785584] [2020-12-09 07:53:12,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:12,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:53:12,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974685043] [2020-12-09 07:53:12,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:53:12,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:12,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:53:12,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:53:12,281 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand 3 states. [2020-12-09 07:53:12,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:12,293 INFO L93 Difference]: Finished difference Result 154 states and 184 transitions. [2020-12-09 07:53:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:53:12,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-09 07:53:12,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:12,295 INFO L225 Difference]: With dead ends: 154 [2020-12-09 07:53:12,295 INFO L226 Difference]: Without dead ends: 154 [2020-12-09 07:53:12,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:53:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-09 07:53:12,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 106. [2020-12-09 07:53:12,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-09 07:53:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 134 transitions. [2020-12-09 07:53:12,299 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 134 transitions. Word has length 15 [2020-12-09 07:53:12,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:12,299 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 134 transitions. [2020-12-09 07:53:12,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:53:12,299 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 134 transitions. [2020-12-09 07:53:12,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 07:53:12,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:12,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:12,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 07:53:12,300 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:12,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:12,300 INFO L82 PathProgramCache]: Analyzing trace with hash -986057155, now seen corresponding path program 1 times [2020-12-09 07:53:12,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:12,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538070304] [2020-12-09 07:53:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:12,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538070304] [2020-12-09 07:53:12,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:12,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:53:12,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593773366] [2020-12-09 07:53:12,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 07:53:12,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:12,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 07:53:12,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:53:12,363 INFO L87 Difference]: Start difference. First operand 106 states and 134 transitions. Second operand 7 states. [2020-12-09 07:53:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:12,489 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2020-12-09 07:53:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 07:53:12,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-09 07:53:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:12,490 INFO L225 Difference]: With dead ends: 140 [2020-12-09 07:53:12,490 INFO L226 Difference]: Without dead ends: 140 [2020-12-09 07:53:12,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 07:53:12,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-09 07:53:12,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 107. [2020-12-09 07:53:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-09 07:53:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 135 transitions. [2020-12-09 07:53:12,493 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 135 transitions. Word has length 16 [2020-12-09 07:53:12,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:12,493 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 135 transitions. [2020-12-09 07:53:12,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 07:53:12,493 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 135 transitions. [2020-12-09 07:53:12,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 07:53:12,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:12,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:12,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 07:53:12,494 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:12,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1009003591, now seen corresponding path program 1 times [2020-12-09 07:53:12,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:12,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335964432] [2020-12-09 07:53:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:12,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335964432] [2020-12-09 07:53:12,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:12,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 07:53:12,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895901440] [2020-12-09 07:53:12,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 07:53:12,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:12,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 07:53:12,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-09 07:53:12,606 INFO L87 Difference]: Start difference. First operand 107 states and 135 transitions. Second operand 10 states. [2020-12-09 07:53:12,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:12,926 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-12-09 07:53:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 07:53:12,926 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-09 07:53:12,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:12,927 INFO L225 Difference]: With dead ends: 136 [2020-12-09 07:53:12,927 INFO L226 Difference]: Without dead ends: 136 [2020-12-09 07:53:12,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-12-09 07:53:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-09 07:53:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 113. [2020-12-09 07:53:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-09 07:53:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 143 transitions. [2020-12-09 07:53:12,931 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 143 transitions. Word has length 16 [2020-12-09 07:53:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:12,931 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 143 transitions. [2020-12-09 07:53:12,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 07:53:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 143 transitions. [2020-12-09 07:53:12,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 07:53:12,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:12,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:12,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 07:53:12,932 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:12,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:12,933 INFO L82 PathProgramCache]: Analyzing trace with hash -502923985, now seen corresponding path program 1 times [2020-12-09 07:53:12,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:12,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580148148] [2020-12-09 07:53:12,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:13,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580148148] [2020-12-09 07:53:13,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:13,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 07:53:13,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954809154] [2020-12-09 07:53:13,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:53:13,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:13,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:53:13,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:53:13,017 INFO L87 Difference]: Start difference. First operand 113 states and 143 transitions. Second operand 8 states. [2020-12-09 07:53:13,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:13,190 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2020-12-09 07:53:13,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 07:53:13,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-09 07:53:13,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:13,191 INFO L225 Difference]: With dead ends: 151 [2020-12-09 07:53:13,191 INFO L226 Difference]: Without dead ends: 151 [2020-12-09 07:53:13,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-09 07:53:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-09 07:53:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 115. [2020-12-09 07:53:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-09 07:53:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 145 transitions. [2020-12-09 07:53:13,193 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 145 transitions. Word has length 17 [2020-12-09 07:53:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:13,194 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 145 transitions. [2020-12-09 07:53:13,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:53:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 145 transitions. [2020-12-09 07:53:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 07:53:13,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:13,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:13,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 07:53:13,194 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:13,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1214712431, now seen corresponding path program 1 times [2020-12-09 07:53:13,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:13,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671015742] [2020-12-09 07:53:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:13,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671015742] [2020-12-09 07:53:13,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:13,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 07:53:13,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690305977] [2020-12-09 07:53:13,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:53:13,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:13,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:53:13,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:53:13,266 INFO L87 Difference]: Start difference. First operand 115 states and 145 transitions. Second operand 8 states. [2020-12-09 07:53:13,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:13,499 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2020-12-09 07:53:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 07:53:13,499 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-09 07:53:13,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:13,500 INFO L225 Difference]: With dead ends: 142 [2020-12-09 07:53:13,500 INFO L226 Difference]: Without dead ends: 142 [2020-12-09 07:53:13,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-09 07:53:13,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-09 07:53:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 115. [2020-12-09 07:53:13,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-09 07:53:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 144 transitions. [2020-12-09 07:53:13,502 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 144 transitions. Word has length 17 [2020-12-09 07:53:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:13,502 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 144 transitions. [2020-12-09 07:53:13,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:53:13,503 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 144 transitions. [2020-12-09 07:53:13,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 07:53:13,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:13,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:13,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-09 07:53:13,503 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:13,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:13,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1214712430, now seen corresponding path program 1 times [2020-12-09 07:53:13,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:13,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71474112] [2020-12-09 07:53:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:13,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71474112] [2020-12-09 07:53:13,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:13,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:53:13,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908693675] [2020-12-09 07:53:13,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 07:53:13,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:13,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 07:53:13,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:53:13,586 INFO L87 Difference]: Start difference. First operand 115 states and 144 transitions. Second operand 7 states. [2020-12-09 07:53:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:13,755 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2020-12-09 07:53:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 07:53:13,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-12-09 07:53:13,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:13,756 INFO L225 Difference]: With dead ends: 144 [2020-12-09 07:53:13,756 INFO L226 Difference]: Without dead ends: 144 [2020-12-09 07:53:13,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-09 07:53:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-09 07:53:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 115. [2020-12-09 07:53:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-09 07:53:13,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 143 transitions. [2020-12-09 07:53:13,759 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 143 transitions. Word has length 17 [2020-12-09 07:53:13,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:13,759 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 143 transitions. [2020-12-09 07:53:13,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 07:53:13,759 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 143 transitions. [2020-12-09 07:53:13,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 07:53:13,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:13,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:13,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-09 07:53:13,759 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:13,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:13,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1586853504, now seen corresponding path program 1 times [2020-12-09 07:53:13,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:13,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601192215] [2020-12-09 07:53:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:13,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601192215] [2020-12-09 07:53:13,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:53:13,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 07:53:13,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346227162] [2020-12-09 07:53:13,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:53:13,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:13,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:53:13,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:53:13,840 INFO L87 Difference]: Start difference. First operand 115 states and 143 transitions. Second operand 8 states. [2020-12-09 07:53:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:13,968 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-12-09 07:53:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 07:53:13,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-09 07:53:13,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:13,969 INFO L225 Difference]: With dead ends: 113 [2020-12-09 07:53:13,969 INFO L226 Difference]: Without dead ends: 113 [2020-12-09 07:53:13,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-09 07:53:13,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-09 07:53:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 100. [2020-12-09 07:53:13,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-09 07:53:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2020-12-09 07:53:13,972 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 18 [2020-12-09 07:53:13,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:13,973 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2020-12-09 07:53:13,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:53:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2020-12-09 07:53:13,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 07:53:13,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:13,973 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:13,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-09 07:53:13,973 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:13,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:13,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1228691407, now seen corresponding path program 1 times [2020-12-09 07:53:13,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:13,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377015805] [2020-12-09 07:53:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:14,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:14,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377015805] [2020-12-09 07:53:14,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515551390] [2020-12-09 07:53:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:53:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:53:14,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 07:53:14,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:53:14,238 INFO L348 Elim1Store]: treesize reduction 73, result has 33.0 percent of original size [2020-12-09 07:53:14,239 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2020-12-09 07:53:14,241 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,266 INFO L625 ElimStorePlain]: treesize reduction 10, result has 75.6 percent of original size [2020-12-09 07:53:14,276 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 07:53:14,279 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 07:53:14,281 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-09 07:53:14,283 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-09 07:53:14,283 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:31 [2020-12-09 07:53:14,285 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 07:53:14,286 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 07:53:14,287 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-09 07:53:14,314 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 07:53:14,315 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 07:53:14,317 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-09 07:53:14,348 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 07:53:14,350 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 07:53:14,351 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-09 07:53:14,426 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 07:53:14,446 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 07:53:14,447 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-12-09 07:53:14,452 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 07:53:14,454 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,464 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 07:53:14,464 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-12-09 07:53:14,466 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 07:53:14,468 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,482 INFO L625 ElimStorePlain]: treesize reduction 20, result has 42.9 percent of original size [2020-12-09 07:53:14,483 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,483 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:53, output treesize:15 [2020-12-09 07:53:14,509 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 07:53:14,510 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,516 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 07:53:14,517 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,518 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:23 [2020-12-09 07:53:14,565 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 07:53:14,566 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 50 [2020-12-09 07:53:14,569 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,576 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 07:53:14,576 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,576 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:23 [2020-12-09 07:53:14,621 INFO L348 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-12-09 07:53:14,622 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2020-12-09 07:53:14,624 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 07:53:14,631 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,632 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:23 [2020-12-09 07:53:14,689 INFO L348 Elim1Store]: treesize reduction 38, result has 56.3 percent of original size [2020-12-09 07:53:14,689 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 78 [2020-12-09 07:53:14,695 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-09 07:53:14,695 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 07:53:14,697 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,702 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 07:53:14,703 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 07:53:14,703 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:28 [2020-12-09 07:53:14,736 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 07:53:14,736 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 30 [2020-12-09 07:53:14,738 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 07:53:14,742 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,742 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:4 [2020-12-09 07:53:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:14,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:53:14,754 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 07:53:14,756 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 07:53:14,757 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 07:53:14,757 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-12-09 07:53:14,790 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 07:53:14,791 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 07:53:14,792 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 07:53:14,792 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:18 [2020-12-09 07:53:15,555 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0.offset Int) (v_DerPreprocessor_1 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) ULTIMATE.start_main_~x~0.offset c_ULTIMATE.start_main_~head~0.base) (+ ULTIMATE.start_main_~x~0.offset 4) v_DerPreprocessor_1)) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) 0))) is different from false [2020-12-09 07:53:15,592 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 174 [2020-12-09 07:53:15,596 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-09 07:53:15,683 INFO L625 ElimStorePlain]: treesize reduction 51, result has 51.4 percent of original size [2020-12-09 07:53:15,685 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 07:53:15,686 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 07:53:15,688 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2020-12-09 07:53:15,689 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:15 [2020-12-09 07:53:15,693 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-12-09 07:53:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:53:15,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2122642242] [2020-12-09 07:53:15,785 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2020-12-09 07:53:15,785 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:53:15,788 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:53:15,792 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:53:15,792 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:53:16,202 WARN L220 Elim1Store]: Array PQE input equivalent to false [2020-12-09 07:53:16,265 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 07:53:16,984 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-12-09 07:53:17,559 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:53:17,858 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-12-09 07:53:18,060 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:53:18,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:53:18,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2020-12-09 07:53:18,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137415323] [2020-12-09 07:53:18,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-09 07:53:18,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:53:18,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-09 07:53:18,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=878, Unknown=1, NotChecked=60, Total=1056 [2020-12-09 07:53:18,062 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand 22 states. [2020-12-09 07:53:22,009 WARN L197 SmtUtils]: Spent 3.78 s on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-09 07:53:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:53:22,604 INFO L93 Difference]: Finished difference Result 195 states and 224 transitions. [2020-12-09 07:53:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 07:53:22,604 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 18 [2020-12-09 07:53:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:53:22,605 INFO L225 Difference]: With dead ends: 195 [2020-12-09 07:53:22,605 INFO L226 Difference]: Without dead ends: 195 [2020-12-09 07:53:22,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=237, Invalid=1406, Unknown=1, NotChecked=78, Total=1722 [2020-12-09 07:53:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-12-09 07:53:22,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 118. [2020-12-09 07:53:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-09 07:53:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2020-12-09 07:53:22,608 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 18 [2020-12-09 07:53:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:53:22,609 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2020-12-09 07:53:22,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-09 07:53:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2020-12-09 07:53:22,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 07:53:22,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:53:22,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:53:22,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2020-12-09 07:53:22,811 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 07:53:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:53:22,812 INFO L82 PathProgramCache]: Analyzing trace with hash 892529944, now seen corresponding path program 1 times [2020-12-09 07:53:22,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:53:22,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914970404] [2020-12-09 07:53:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:53:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:53:22,827 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:53:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:53:22,836 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:53:22,850 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 07:53:22,850 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:53:22,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2020-12-09 07:53:22,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:53:22 BoogieIcfgContainer [2020-12-09 07:53:22,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:53:22,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:53:22,870 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:53:22,870 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:53:22,870 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:53:09" (3/4) ... [2020-12-09 07:53:22,872 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 07:53:22,896 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e86b065d-694b-4f22-b72a-2dcdc2023140/bin/utaipan/witness.graphml [2020-12-09 07:53:22,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:53:22,896 INFO L168 Benchmark]: Toolchain (without parser) took 14227.99 ms. Allocated memory was 81.8 MB in the beginning and 146.8 MB in the end (delta: 65.0 MB). Free memory was 60.5 MB in the beginning and 71.7 MB in the end (delta: -11.2 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:53:22,897 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 81.8 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:53:22,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.56 ms. Allocated memory is still 81.8 MB. Free memory was 60.3 MB in the beginning and 59.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:53:22,897 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 81.8 MB. Free memory was 58.6 MB in the beginning and 56.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:53:22,897 INFO L168 Benchmark]: Boogie Preprocessor took 23.44 ms. Allocated memory is still 81.8 MB. Free memory was 56.9 MB in the beginning and 55.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:53:22,897 INFO L168 Benchmark]: RCFGBuilder took 442.53 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 55.2 MB in the beginning and 75.9 MB in the end (delta: -20.7 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:53:22,898 INFO L168 Benchmark]: TraceAbstraction took 13413.79 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 75.4 MB in the beginning and 74.8 MB in the end (delta: 550.5 kB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:53:22,898 INFO L168 Benchmark]: Witness Printer took 25.95 ms. Allocated memory is still 146.8 MB. Free memory was 74.8 MB in the beginning and 71.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:53:22,899 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 81.8 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.56 ms. Allocated memory is still 81.8 MB. Free memory was 60.3 MB in the beginning and 59.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 81.8 MB. Free memory was 58.6 MB in the beginning and 56.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.44 ms. Allocated memory is still 81.8 MB. Free memory was 56.9 MB in the beginning and 55.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 442.53 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 55.2 MB in the beginning and 75.9 MB in the end (delta: -20.7 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13413.79 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 75.4 MB in the beginning and 74.8 MB in the end (delta: 550.5 kB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. * Witness Printer took 25.95 ms. Allocated memory is still 146.8 MB. Free memory was 74.8 MB in the beginning and 71.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1032]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = head [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int state = 1; [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state [L1027] EXPR head->next [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) [L1030] EXPR x->data [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data [L1032] EXPR x->data [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data [L1032] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1032] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 90 locations, 46 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.3s, OverallIterations: 21, TraceHistogramMax: 2, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1042 SDtfs, 3223 SDslu, 2516 SDs, 0 SdLazy, 3549 SolverSat, 469 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 42 SyntacticMatches, 7 SemanticMatches, 174 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 668 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 247 ConstructedInterpolants, 14 QuantifiedInterpolants, 47079 SizeOfPredicates, 13 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 22 InterpolantComputations, 19 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...