./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b33005346e6b80bc2289c235b2b7a5c7f83b2de ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b33005346e6b80bc2289c235b2b7a5c7f83b2de ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: Tracecheck IpTcStrategyModuleMathsat [155230653] said UNSAT, interpolant generator IpTcStrategyModuleZ3 [2134169968] failed with TRACE_FEASIBLE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:01:34,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:01:34,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:01:34,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:01:34,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:01:34,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:01:34,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:01:34,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:01:34,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:01:34,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:01:34,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:01:34,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:01:34,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:01:34,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:01:34,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:01:34,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:01:34,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:01:34,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:01:34,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:01:34,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:01:34,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:01:34,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:01:34,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:01:34,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:01:34,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:01:34,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:01:34,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:01:34,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:01:34,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:01:34,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:01:34,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:01:34,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:01:34,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:01:34,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:01:34,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:01:34,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:01:34,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:01:34,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:01:34,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:01:34,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:01:34,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:01:34,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 19:01:34,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:01:34,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:01:34,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:01:34,921 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:01:34,921 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:01:34,921 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:01:34,922 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:01:34,922 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:01:34,922 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:01:34,922 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:01:34,922 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:01:34,922 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:01:34,922 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:01:34,922 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:01:34,923 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:01:34,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 19:01:34,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 19:01:34,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:01:34,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:01:34,923 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 19:01:34,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:01:34,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:01:34,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:01:34,924 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 19:01:34,924 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 19:01:34,924 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 19:01:34,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:01:34,924 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:01:34,924 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:01:34,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:01:34,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:01:34,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:01:34,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:01:34,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:01:34,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:01:34,925 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:01:34,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:01:34,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:01:34,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:01:34,926 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_f6baa5dd-aca1-4847-8155-e078a142182d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b33005346e6b80bc2289c235b2b7a5c7f83b2de [2020-12-09 19:01:35,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:01:35,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:01:35,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:01:35,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:01:35,112 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:01:35,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2020-12-09 19:01:35,152 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/data/1833deb6e/0a1a07cb60a1462e9ede5726e3b06677/FLAG6c22cdbdc [2020-12-09 19:01:35,577 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:01:35,577 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2020-12-09 19:01:35,589 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/data/1833deb6e/0a1a07cb60a1462e9ede5726e3b06677/FLAG6c22cdbdc [2020-12-09 19:01:35,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/data/1833deb6e/0a1a07cb60a1462e9ede5726e3b06677 [2020-12-09 19:01:35,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:01:35,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:01:35,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:01:35,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:01:35,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:01:35,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:01:35" (1/1) ... [2020-12-09 19:01:35,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635836cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35, skipping insertion in model container [2020-12-09 19:01:35,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:01:35" (1/1) ... [2020-12-09 19:01:35,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:01:35,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:01:35,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:01:35,882 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:01:35,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:01:35,975 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:01:35,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35 WrapperNode [2020-12-09 19:01:35,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:01:35,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:01:35,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:01:35,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:01:35,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35" (1/1) ... [2020-12-09 19:01:35,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35" (1/1) ... [2020-12-09 19:01:36,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:01:36,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:01:36,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:01:36,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:01:36,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35" (1/1) ... [2020-12-09 19:01:36,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35" (1/1) ... [2020-12-09 19:01:36,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35" (1/1) ... [2020-12-09 19:01:36,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35" (1/1) ... [2020-12-09 19:01:36,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35" (1/1) ... [2020-12-09 19:01:36,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35" (1/1) ... [2020-12-09 19:01:36,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35" (1/1) ... [2020-12-09 19:01:36,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:01:36,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:01:36,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:01:36,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:01:36,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/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 19:01:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 19:01:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 19:01:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:01:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 19:01:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 19:01:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 19:01:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:01:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:01:36,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:01:36,552 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:01:36,552 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2020-12-09 19:01:36,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:01:36 BoogieIcfgContainer [2020-12-09 19:01:36,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:01:36,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:01:36,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:01:36,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:01:36,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:01:35" (1/3) ... [2020-12-09 19:01:36,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40625810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:01:36, skipping insertion in model container [2020-12-09 19:01:36,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:01:35" (2/3) ... [2020-12-09 19:01:36,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40625810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:01:36, skipping insertion in model container [2020-12-09 19:01:36,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:01:36" (3/3) ... [2020-12-09 19:01:36,560 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2020-12-09 19:01:36,569 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:01:36,571 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 67 error locations. [2020-12-09 19:01:36,578 INFO L253 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2020-12-09 19:01:36,593 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:01:36,593 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 19:01:36,593 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:01:36,593 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:01:36,593 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:01:36,593 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:01:36,593 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:01:36,593 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:01:36,607 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-12-09 19:01:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 19:01:36,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:36,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 19:01:36,612 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:36,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:36,616 INFO L82 PathProgramCache]: Analyzing trace with hash 304959, now seen corresponding path program 1 times [2020-12-09 19:01:36,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:36,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711385082] [2020-12-09 19:01:36,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:36,780 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 19:01:36,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711385082] [2020-12-09 19:01:36,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:36,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 19:01:36,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116246976] [2020-12-09 19:01:36,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:01:36,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:36,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:01:36,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:01:36,795 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-12-09 19:01:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:36,892 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2020-12-09 19:01:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:01:36,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-09 19:01:36,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:36,900 INFO L225 Difference]: With dead ends: 171 [2020-12-09 19:01:36,900 INFO L226 Difference]: Without dead ends: 169 [2020-12-09 19:01:36,901 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 19:01:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-09 19:01:36,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 162. [2020-12-09 19:01:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-09 19:01:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 186 transitions. [2020-12-09 19:01:36,932 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 186 transitions. Word has length 3 [2020-12-09 19:01:36,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:36,932 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 186 transitions. [2020-12-09 19:01:36,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:01:36,932 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 186 transitions. [2020-12-09 19:01:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 19:01:36,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:36,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 19:01:36,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:01:36,933 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:36,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:36,934 INFO L82 PathProgramCache]: Analyzing trace with hash 304960, now seen corresponding path program 1 times [2020-12-09 19:01:36,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:36,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605473504] [2020-12-09 19:01:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:36,997 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 19:01:36,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605473504] [2020-12-09 19:01:36,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:36,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 19:01:36,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84462373] [2020-12-09 19:01:36,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:01:36,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:36,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:01:37,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:01:37,000 INFO L87 Difference]: Start difference. First operand 162 states and 186 transitions. Second operand 3 states. [2020-12-09 19:01:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:37,129 INFO L93 Difference]: Finished difference Result 277 states and 312 transitions. [2020-12-09 19:01:37,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:01:37,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-09 19:01:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:37,133 INFO L225 Difference]: With dead ends: 277 [2020-12-09 19:01:37,133 INFO L226 Difference]: Without dead ends: 277 [2020-12-09 19:01:37,134 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 19:01:37,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-12-09 19:01:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 218. [2020-12-09 19:01:37,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-09 19:01:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 284 transitions. [2020-12-09 19:01:37,153 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 284 transitions. Word has length 3 [2020-12-09 19:01:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:37,153 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 284 transitions. [2020-12-09 19:01:37,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:01:37,154 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 284 transitions. [2020-12-09 19:01:37,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 19:01:37,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:37,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 19:01:37,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:01:37,155 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:37,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:37,156 INFO L82 PathProgramCache]: Analyzing trace with hash 9453712, now seen corresponding path program 1 times [2020-12-09 19:01:37,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:37,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250444995] [2020-12-09 19:01:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:37,258 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 19:01:37,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250444995] [2020-12-09 19:01:37,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:37,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:01:37,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695391657] [2020-12-09 19:01:37,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:01:37,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:37,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:01:37,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:01:37,261 INFO L87 Difference]: Start difference. First operand 218 states and 284 transitions. Second operand 4 states. [2020-12-09 19:01:37,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:37,484 INFO L93 Difference]: Finished difference Result 325 states and 394 transitions. [2020-12-09 19:01:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:01:37,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 19:01:37,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:37,486 INFO L225 Difference]: With dead ends: 325 [2020-12-09 19:01:37,486 INFO L226 Difference]: Without dead ends: 325 [2020-12-09 19:01:37,486 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 19:01:37,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-12-09 19:01:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 242. [2020-12-09 19:01:37,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-12-09 19:01:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-12-09 19:01:37,498 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 4 [2020-12-09 19:01:37,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:37,498 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-12-09 19:01:37,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:01:37,498 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-12-09 19:01:37,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 19:01:37,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:37,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 19:01:37,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 19:01:37,499 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:37,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:37,499 INFO L82 PathProgramCache]: Analyzing trace with hash 293065119, now seen corresponding path program 1 times [2020-12-09 19:01:37,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:37,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609053155] [2020-12-09 19:01:37,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:37,615 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 19:01:37,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609053155] [2020-12-09 19:01:37,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:37,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:01:37,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863722189] [2020-12-09 19:01:37,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:01:37,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:37,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:01:37,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:01:37,617 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 4 states. [2020-12-09 19:01:37,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:37,780 INFO L93 Difference]: Finished difference Result 297 states and 346 transitions. [2020-12-09 19:01:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:01:37,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 19:01:37,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:37,782 INFO L225 Difference]: With dead ends: 297 [2020-12-09 19:01:37,783 INFO L226 Difference]: Without dead ends: 297 [2020-12-09 19:01:37,783 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 19:01:37,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-12-09 19:01:37,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 242. [2020-12-09 19:01:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-12-09 19:01:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 318 transitions. [2020-12-09 19:01:37,794 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 318 transitions. Word has length 5 [2020-12-09 19:01:37,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:37,795 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 318 transitions. [2020-12-09 19:01:37,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:01:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 318 transitions. [2020-12-09 19:01:37,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:01:37,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:37,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:01:37,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 19:01:37,795 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:37,796 INFO L82 PathProgramCache]: Analyzing trace with hash 495084146, now seen corresponding path program 1 times [2020-12-09 19:01:37,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:37,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435186051] [2020-12-09 19:01:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:37,841 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 19:01:37,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435186051] [2020-12-09 19:01:37,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:37,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:01:37,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226919130] [2020-12-09 19:01:37,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:01:37,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:37,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:01:37,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:01:37,843 INFO L87 Difference]: Start difference. First operand 242 states and 318 transitions. Second operand 4 states. [2020-12-09 19:01:37,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:37,929 INFO L93 Difference]: Finished difference Result 263 states and 339 transitions. [2020-12-09 19:01:37,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:01:37,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 19:01:37,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:37,931 INFO L225 Difference]: With dead ends: 263 [2020-12-09 19:01:37,931 INFO L226 Difference]: Without dead ends: 263 [2020-12-09 19:01:37,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:01:37,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-12-09 19:01:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 251. [2020-12-09 19:01:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-12-09 19:01:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 334 transitions. [2020-12-09 19:01:37,939 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 334 transitions. Word has length 6 [2020-12-09 19:01:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:37,939 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 334 transitions. [2020-12-09 19:01:37,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:01:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 334 transitions. [2020-12-09 19:01:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 19:01:37,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:37,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:01:37,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 19:01:37,940 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:37,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1832260607, now seen corresponding path program 1 times [2020-12-09 19:01:37,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:37,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481406243] [2020-12-09 19:01:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:38,000 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 19:01:38,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481406243] [2020-12-09 19:01:38,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:38,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 19:01:38,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042924859] [2020-12-09 19:01:38,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:01:38,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:38,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:01:38,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:01:38,002 INFO L87 Difference]: Start difference. First operand 251 states and 334 transitions. Second operand 3 states. [2020-12-09 19:01:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:38,040 INFO L93 Difference]: Finished difference Result 253 states and 335 transitions. [2020-12-09 19:01:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:01:38,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 19:01:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:38,042 INFO L225 Difference]: With dead ends: 253 [2020-12-09 19:01:38,042 INFO L226 Difference]: Without dead ends: 253 [2020-12-09 19:01:38,042 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 19:01:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-12-09 19:01:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2020-12-09 19:01:38,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-12-09 19:01:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 332 transitions. [2020-12-09 19:01:38,047 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 332 transitions. Word has length 7 [2020-12-09 19:01:38,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:38,047 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 332 transitions. [2020-12-09 19:01:38,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:01:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 332 transitions. [2020-12-09 19:01:38,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 19:01:38,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:38,047 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:01:38,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 19:01:38,048 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:38,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:38,048 INFO L82 PathProgramCache]: Analyzing trace with hash 70903527, now seen corresponding path program 1 times [2020-12-09 19:01:38,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:38,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94667836] [2020-12-09 19:01:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:38,100 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 19:01:38,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94667836] [2020-12-09 19:01:38,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184929707] [2020-12-09 19:01:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/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 19:01:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:38,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 19:01:38,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:01:38,357 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-12-09 19:01:38,358 INFO L348 Elim1Store]: treesize reduction 190, result has 33.6 percent of original size [2020-12-09 19:01:38,359 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 5 case distinctions, treesize of input 21 treesize of output 101 [2020-12-09 19:01:38,364 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:01:38,410 INFO L625 ElimStorePlain]: treesize reduction 50, result has 53.3 percent of original size [2020-12-09 19:01:38,417 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 19:01:38,418 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:28, output treesize:12 [2020-12-09 19:01:38,443 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 19:01:38,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:01:38,480 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 19:01:38,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1484618836] [2020-12-09 19:01:38,494 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 19:01:38,495 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:01:38,498 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:01:38,502 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:01:38,502 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:01:38,647 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:01:38,660 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:01:38,671 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:01:39,304 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:01:39,482 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-12-09 19:01:41,244 WARN L197 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 257 DAG size of output: 197 [2020-12-09 19:01:42,982 WARN L197 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 267 DAG size of output: 204 [2020-12-09 19:01:43,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 19:01:43,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 2, 2] total 9 [2020-12-09 19:01:43,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797178899] [2020-12-09 19:01:43,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:01:43,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:43,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:01:43,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-09 19:01:43,522 INFO L87 Difference]: Start difference. First operand 250 states and 332 transitions. Second operand 5 states. [2020-12-09 19:01:44,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:44,116 INFO L93 Difference]: Finished difference Result 299 states and 381 transitions. [2020-12-09 19:01:44,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:01:44,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 19:01:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:44,117 INFO L225 Difference]: With dead ends: 299 [2020-12-09 19:01:44,117 INFO L226 Difference]: Without dead ends: 299 [2020-12-09 19:01:44,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-09 19:01:44,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-12-09 19:01:44,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 273. [2020-12-09 19:01:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-12-09 19:01:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 373 transitions. [2020-12-09 19:01:44,123 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 373 transitions. Word has length 11 [2020-12-09 19:01:44,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:44,123 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 373 transitions. [2020-12-09 19:01:44,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:01:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 373 transitions. [2020-12-09 19:01:44,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 19:01:44,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:44,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:01:44,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-09 19:01:44,326 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:44,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:44,328 INFO L82 PathProgramCache]: Analyzing trace with hash -572674335, now seen corresponding path program 1 times [2020-12-09 19:01:44,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:44,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654040529] [2020-12-09 19:01:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:01:44,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654040529] [2020-12-09 19:01:44,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622389703] [2020-12-09 19:01:44,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:01:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:44,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 19:01:44,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:01:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:01:44,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:01:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:01:44,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [610712618] [2020-12-09 19:01:44,445 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-12-09 19:01:44,445 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:01:44,446 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:01:44,446 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:01:44,446 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:01:44,476 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:01:44,553 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:01:44,564 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:01:45,255 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:01:45,464 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-12-09 19:01:45,592 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-09 19:01:45,761 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2020-12-09 19:01:45,937 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2020-12-09 19:01:46,129 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2020-12-09 19:01:46,555 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 83 [2020-12-09 19:01:48,609 WARN L197 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 265 DAG size of output: 203 [2020-12-09 19:01:50,661 WARN L197 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 260 DAG size of output: 199 [2020-12-09 19:01:50,796 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-09 19:01:50,885 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:01:50,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 19:01:50,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2020-12-09 19:01:50,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831959441] [2020-12-09 19:01:50,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:01:50,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:50,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:01:50,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-09 19:01:50,886 INFO L87 Difference]: Start difference. First operand 273 states and 373 transitions. Second operand 5 states. [2020-12-09 19:01:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:50,946 INFO L93 Difference]: Finished difference Result 373 states and 470 transitions. [2020-12-09 19:01:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:01:50,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 19:01:50,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:50,947 INFO L225 Difference]: With dead ends: 373 [2020-12-09 19:01:50,948 INFO L226 Difference]: Without dead ends: 373 [2020-12-09 19:01:50,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-09 19:01:50,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-12-09 19:01:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 287. [2020-12-09 19:01:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 19:01:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 388 transitions. [2020-12-09 19:01:50,953 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 388 transitions. Word has length 13 [2020-12-09 19:01:50,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:50,953 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 388 transitions. [2020-12-09 19:01:50,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:01:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 388 transitions. [2020-12-09 19:01:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 19:01:50,954 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:50,954 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 19:01:51,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:01:51,157 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:51,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:51,158 INFO L82 PathProgramCache]: Analyzing trace with hash 524639606, now seen corresponding path program 1 times [2020-12-09 19:01:51,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:51,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817529710] [2020-12-09 19:01:51,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:51,205 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 19:01:51,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817529710] [2020-12-09 19:01:51,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:51,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:01:51,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949876724] [2020-12-09 19:01:51,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:01:51,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:51,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:01:51,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:01:51,207 INFO L87 Difference]: Start difference. First operand 287 states and 388 transitions. Second operand 3 states. [2020-12-09 19:01:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:51,221 INFO L93 Difference]: Finished difference Result 361 states and 459 transitions. [2020-12-09 19:01:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:01:51,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-09 19:01:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:51,223 INFO L225 Difference]: With dead ends: 361 [2020-12-09 19:01:51,223 INFO L226 Difference]: Without dead ends: 361 [2020-12-09 19:01:51,224 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 19:01:51,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-12-09 19:01:51,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 262. [2020-12-09 19:01:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-09 19:01:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 344 transitions. [2020-12-09 19:01:51,228 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 344 transitions. Word has length 17 [2020-12-09 19:01:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:51,228 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 344 transitions. [2020-12-09 19:01:51,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:01:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 344 transitions. [2020-12-09 19:01:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 19:01:51,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:51,229 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 19:01:51,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-12-09 19:01:51,229 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:51,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:51,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1037719910, now seen corresponding path program 1 times [2020-12-09 19:01:51,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:51,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566962983] [2020-12-09 19:01:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:51,272 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 19:01:51,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566962983] [2020-12-09 19:01:51,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:51,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:01:51,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635214225] [2020-12-09 19:01:51,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:01:51,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:51,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:01:51,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:01:51,273 INFO L87 Difference]: Start difference. First operand 262 states and 344 transitions. Second operand 5 states. [2020-12-09 19:01:51,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:51,430 INFO L93 Difference]: Finished difference Result 347 states and 410 transitions. [2020-12-09 19:01:51,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 19:01:51,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-09 19:01:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:51,432 INFO L225 Difference]: With dead ends: 347 [2020-12-09 19:01:51,432 INFO L226 Difference]: Without dead ends: 347 [2020-12-09 19:01:51,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:01:51,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-12-09 19:01:51,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 258. [2020-12-09 19:01:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-12-09 19:01:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 320 transitions. [2020-12-09 19:01:51,437 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 320 transitions. Word has length 19 [2020-12-09 19:01:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:51,437 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 320 transitions. [2020-12-09 19:01:51,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:01:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 320 transitions. [2020-12-09 19:01:51,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 19:01:51,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:51,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:01:51,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-12-09 19:01:51,438 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:51,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:51,438 INFO L82 PathProgramCache]: Analyzing trace with hash 812048495, now seen corresponding path program 1 times [2020-12-09 19:01:51,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:51,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007089201] [2020-12-09 19:01:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:51,463 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 19:01:51,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007089201] [2020-12-09 19:01:51,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:51,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:01:51,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454690236] [2020-12-09 19:01:51,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:01:51,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:51,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:01:51,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:01:51,465 INFO L87 Difference]: Start difference. First operand 258 states and 320 transitions. Second operand 4 states. [2020-12-09 19:01:51,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:51,621 INFO L93 Difference]: Finished difference Result 368 states and 445 transitions. [2020-12-09 19:01:51,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:01:51,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-09 19:01:51,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:51,623 INFO L225 Difference]: With dead ends: 368 [2020-12-09 19:01:51,623 INFO L226 Difference]: Without dead ends: 368 [2020-12-09 19:01:51,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:01:51,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-12-09 19:01:51,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 277. [2020-12-09 19:01:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-12-09 19:01:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 354 transitions. [2020-12-09 19:01:51,630 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 354 transitions. Word has length 20 [2020-12-09 19:01:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:51,631 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 354 transitions. [2020-12-09 19:01:51,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:01:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 354 transitions. [2020-12-09 19:01:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 19:01:51,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:51,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:01:51,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-12-09 19:01:51,632 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:51,633 INFO L82 PathProgramCache]: Analyzing trace with hash -596300355, now seen corresponding path program 1 times [2020-12-09 19:01:51,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:51,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061716338] [2020-12-09 19:01:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:51,681 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 19:01:51,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061716338] [2020-12-09 19:01:51,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:51,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:01:51,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072888840] [2020-12-09 19:01:51,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:01:51,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:51,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:01:51,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:01:51,682 INFO L87 Difference]: Start difference. First operand 277 states and 354 transitions. Second operand 4 states. [2020-12-09 19:01:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:51,806 INFO L93 Difference]: Finished difference Result 250 states and 318 transitions. [2020-12-09 19:01:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:01:51,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-12-09 19:01:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:51,808 INFO L225 Difference]: With dead ends: 250 [2020-12-09 19:01:51,808 INFO L226 Difference]: Without dead ends: 250 [2020-12-09 19:01:51,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:01:51,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-09 19:01:51,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-12-09 19:01:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-12-09 19:01:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 318 transitions. [2020-12-09 19:01:51,812 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 318 transitions. Word has length 21 [2020-12-09 19:01:51,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:51,812 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 318 transitions. [2020-12-09 19:01:51,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:01:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 318 transitions. [2020-12-09 19:01:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 19:01:51,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:51,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:01:51,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-12-09 19:01:51,813 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:51,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:51,813 INFO L82 PathProgramCache]: Analyzing trace with hash -816419303, now seen corresponding path program 1 times [2020-12-09 19:01:51,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:51,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079264129] [2020-12-09 19:01:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:51,985 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 19:01:51,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079264129] [2020-12-09 19:01:51,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:51,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 19:01:51,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919286048] [2020-12-09 19:01:51,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 19:01:51,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:51,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 19:01:51,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-09 19:01:51,989 INFO L87 Difference]: Start difference. First operand 250 states and 318 transitions. Second operand 10 states. [2020-12-09 19:01:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:52,521 INFO L93 Difference]: Finished difference Result 607 states and 699 transitions. [2020-12-09 19:01:52,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 19:01:52,521 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-12-09 19:01:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:52,524 INFO L225 Difference]: With dead ends: 607 [2020-12-09 19:01:52,524 INFO L226 Difference]: Without dead ends: 607 [2020-12-09 19:01:52,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-12-09 19:01:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-12-09 19:01:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 290. [2020-12-09 19:01:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-12-09 19:01:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 375 transitions. [2020-12-09 19:01:52,531 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 375 transitions. Word has length 21 [2020-12-09 19:01:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:52,531 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 375 transitions. [2020-12-09 19:01:52,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 19:01:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 375 transitions. [2020-12-09 19:01:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 19:01:52,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:52,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:01:52,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-12-09 19:01:52,532 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash 460805525, now seen corresponding path program 1 times [2020-12-09 19:01:52,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:52,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533881463] [2020-12-09 19:01:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:52,565 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 19:01:52,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533881463] [2020-12-09 19:01:52,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:01:52,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:01:52,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286994489] [2020-12-09 19:01:52,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:01:52,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:52,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:01:52,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:01:52,566 INFO L87 Difference]: Start difference. First operand 290 states and 375 transitions. Second operand 5 states. [2020-12-09 19:01:52,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:01:52,699 INFO L93 Difference]: Finished difference Result 389 states and 468 transitions. [2020-12-09 19:01:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 19:01:52,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-09 19:01:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:01:52,701 INFO L225 Difference]: With dead ends: 389 [2020-12-09 19:01:52,701 INFO L226 Difference]: Without dead ends: 389 [2020-12-09 19:01:52,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:01:52,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-12-09 19:01:52,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 290. [2020-12-09 19:01:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-12-09 19:01:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 372 transitions. [2020-12-09 19:01:52,709 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 372 transitions. Word has length 22 [2020-12-09 19:01:52,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:01:52,710 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 372 transitions. [2020-12-09 19:01:52,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:01:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 372 transitions. [2020-12-09 19:01:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 19:01:52,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:01:52,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-09 19:01:52,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-12-09 19:01:52,711 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:01:52,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:01:52,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1394110309, now seen corresponding path program 1 times [2020-12-09 19:01:52,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:01:52,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265111154] [2020-12-09 19:01:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:01:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 19:01:52,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265111154] [2020-12-09 19:01:52,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114886734] [2020-12-09 19:01:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:01:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:01:52,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 19:01:52,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:01:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 19:01:52,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:01:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 19:01:53,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [653100048] [2020-12-09 19:01:53,035 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2020-12-09 19:01:53,035 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:01:53,035 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:01:53,035 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:01:53,035 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:01:53,059 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:01:53,069 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:01:53,160 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:01:53,856 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:01:54,081 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-12-09 19:01:54,211 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-09 19:01:54,383 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2020-12-09 19:01:54,561 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2020-12-09 19:01:54,762 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2020-12-09 19:01:55,204 WARN L197 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 83 [2020-12-09 19:01:57,346 WARN L197 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 265 DAG size of output: 203 [2020-12-09 19:01:59,480 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 260 DAG size of output: 199 [2020-12-09 19:01:59,641 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-09 19:01:59,871 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:01:59,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 19:01:59,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2020-12-09 19:01:59,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480685164] [2020-12-09 19:01:59,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 19:01:59,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:01:59,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 19:01:59,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-12-09 19:01:59,872 INFO L87 Difference]: Start difference. First operand 290 states and 372 transitions. Second operand 13 states. [2020-12-09 19:02:00,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:02:00,289 INFO L93 Difference]: Finished difference Result 536 states and 620 transitions. [2020-12-09 19:02:00,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 19:02:00,289 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-12-09 19:02:00,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:02:00,291 INFO L225 Difference]: With dead ends: 536 [2020-12-09 19:02:00,291 INFO L226 Difference]: Without dead ends: 536 [2020-12-09 19:02:00,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2020-12-09 19:02:00,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-12-09 19:02:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 278. [2020-12-09 19:02:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-09 19:02:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 353 transitions. [2020-12-09 19:02:00,297 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 353 transitions. Word has length 22 [2020-12-09 19:02:00,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:02:00,297 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 353 transitions. [2020-12-09 19:02:00,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 19:02:00,297 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 353 transitions. [2020-12-09 19:02:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 19:02:00,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:02:00,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:02:00,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-12-09 19:02:00,498 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:02:00,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:02:00,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1400069531, now seen corresponding path program 1 times [2020-12-09 19:02:00,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:02:00,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191977413] [2020-12-09 19:02:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:02:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:02:00,614 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 19:02:00,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191977413] [2020-12-09 19:02:00,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:02:00,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:02:00,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498246020] [2020-12-09 19:02:00,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:02:00,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:02:00,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:02:00,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:02:00,615 INFO L87 Difference]: Start difference. First operand 278 states and 353 transitions. Second operand 5 states. [2020-12-09 19:02:00,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:02:00,715 INFO L93 Difference]: Finished difference Result 282 states and 352 transitions. [2020-12-09 19:02:00,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:02:00,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-09 19:02:00,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:02:00,717 INFO L225 Difference]: With dead ends: 282 [2020-12-09 19:02:00,717 INFO L226 Difference]: Without dead ends: 282 [2020-12-09 19:02:00,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:02:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-09 19:02:00,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 277. [2020-12-09 19:02:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-12-09 19:02:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 347 transitions. [2020-12-09 19:02:00,721 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 347 transitions. Word has length 23 [2020-12-09 19:02:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:02:00,721 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 347 transitions. [2020-12-09 19:02:00,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:02:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 347 transitions. [2020-12-09 19:02:00,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 19:02:00,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:02:00,722 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:02:00,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-12-09 19:02:00,722 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:02:00,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:02:00,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1989629247, now seen corresponding path program 1 times [2020-12-09 19:02:00,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:02:00,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119135646] [2020-12-09 19:02:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:02:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:02:00,782 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 19:02:00,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119135646] [2020-12-09 19:02:00,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969172526] [2020-12-09 19:02:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:02:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:02:00,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 19:02:00,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:02:00,974 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 32 [2020-12-09 19:02:01,181 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-12-09 19:02:01,539 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 19:02:01,778 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 174 [2020-12-09 19:02:02,103 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 19:02:02,515 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 19:02:02,904 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 19:02:03,280 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 19:02:03,594 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 19:02:03,957 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 19:02:04,334 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 19:02:04,663 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 19:02:05,116 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 19:02:06,359 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 19:02:14,576 WARN L197 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 28 [2020-12-09 19:02:14,682 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 19:02:14,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:02:15,015 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 19:02:15,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1403805475] [2020-12-09 19:02:15,017 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2020-12-09 19:02:15,017 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:02:15,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:02:15,018 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:02:15,018 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:02:15,056 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:02:15,066 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:02:15,140 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:02:15,446 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:02:15,713 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:02:15,889 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-12-09 19:02:16,640 WARN L197 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 183 [2020-12-09 19:02:17,583 WARN L197 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 191 [2020-12-09 19:02:19,795 WARN L197 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 190 [2020-12-09 19:02:21,299 WARN L197 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 204 [2020-12-09 19:02:22,272 WARN L197 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 212 [2020-12-09 19:02:23,567 WARN L197 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 212 [2020-12-09 19:02:24,717 WARN L197 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 208 [2020-12-09 19:02:24,910 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-12-09 19:02:25,104 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-12-09 19:02:25,354 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2020-12-09 19:02:25,600 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2020-12-09 19:02:25,867 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 85 [2020-12-09 19:02:26,146 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-12-09 19:02:26,346 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-12-09 19:02:26,392 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:02:26,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 19:02:26,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2020-12-09 19:02:26,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365670986] [2020-12-09 19:02:26,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-09 19:02:26,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:02:26,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-09 19:02:26,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2020-12-09 19:02:26,394 INFO L87 Difference]: Start difference. First operand 277 states and 347 transitions. Second operand 15 states. [2020-12-09 19:02:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:02:28,695 INFO L93 Difference]: Finished difference Result 638 states and 712 transitions. [2020-12-09 19:02:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-09 19:02:28,695 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-12-09 19:02:28,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:02:28,698 INFO L225 Difference]: With dead ends: 638 [2020-12-09 19:02:28,698 INFO L226 Difference]: Without dead ends: 638 [2020-12-09 19:02:28,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 27 SyntacticMatches, 30 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=352, Invalid=1454, Unknown=0, NotChecked=0, Total=1806 [2020-12-09 19:02:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-12-09 19:02:28,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 269. [2020-12-09 19:02:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-12-09 19:02:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 333 transitions. [2020-12-09 19:02:28,706 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 333 transitions. Word has length 27 [2020-12-09 19:02:28,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:02:28,706 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 333 transitions. [2020-12-09 19:02:28,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-09 19:02:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 333 transitions. [2020-12-09 19:02:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 19:02:28,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:02:28,707 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:02:28,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:02:28,909 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:02:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:02:28,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1548964468, now seen corresponding path program 1 times [2020-12-09 19:02:28,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:02:28,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525726911] [2020-12-09 19:02:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:02:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:02:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:02:29,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525726911] [2020-12-09 19:02:29,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590235045] [2020-12-09 19:02:29,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:02:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:02:29,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 19:02:29,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:02:29,354 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 37 [2020-12-09 19:02:30,527 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-09 19:02:31,080 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-12-09 19:02:31,476 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2020-12-09 19:02:31,668 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 36 [2020-12-09 19:02:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:02:31,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:02:50,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:02:50,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1133650415] [2020-12-09 19:02:50,739 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2020-12-09 19:02:50,739 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:02:50,739 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:02:50,739 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:02:50,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:02:50,762 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:02:50,840 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:02:50,849 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:02:51,053 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:02:51,366 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:02:51,883 WARN L197 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2020-12-09 19:02:52,553 WARN L197 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 183 [2020-12-09 19:02:53,380 WARN L197 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 191 [2020-12-09 19:02:54,652 WARN L197 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 190 [2020-12-09 19:02:55,842 WARN L197 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 204 [2020-12-09 19:02:56,880 WARN L197 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 212 [2020-12-09 19:02:58,210 WARN L197 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 212 [2020-12-09 19:02:59,286 WARN L197 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 208 [2020-12-09 19:02:59,824 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-12-09 19:03:00,349 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-12-09 19:03:00,921 WARN L197 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 85 [2020-12-09 19:03:01,498 WARN L197 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-12-09 19:03:02,154 WARN L197 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 90 [2020-12-09 19:03:02,809 WARN L197 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2020-12-09 19:03:03,037 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-12-09 19:03:03,100 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:03:03,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 19:03:03,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 17 [2020-12-09 19:03:03,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941983741] [2020-12-09 19:03:03,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-09 19:03:03,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:03,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-09 19:03:03,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=898, Unknown=7, NotChecked=0, Total=1122 [2020-12-09 19:03:03,101 INFO L87 Difference]: Start difference. First operand 269 states and 333 transitions. Second operand 19 states. [2020-12-09 19:03:05,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:05,775 INFO L93 Difference]: Finished difference Result 556 states and 638 transitions. [2020-12-09 19:03:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-09 19:03:05,776 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2020-12-09 19:03:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:05,778 INFO L225 Difference]: With dead ends: 556 [2020-12-09 19:03:05,778 INFO L226 Difference]: Without dead ends: 556 [2020-12-09 19:03:05,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 38 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=438, Invalid=1811, Unknown=7, NotChecked=0, Total=2256 [2020-12-09 19:03:05,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-12-09 19:03:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 291. [2020-12-09 19:03:05,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-12-09 19:03:05,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 362 transitions. [2020-12-09 19:03:05,783 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 362 transitions. Word has length 28 [2020-12-09 19:03:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:05,784 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 362 transitions. [2020-12-09 19:03:05,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-09 19:03:05,784 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 362 transitions. [2020-12-09 19:03:05,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-09 19:03:05,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:05,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:05,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2020-12-09 19:03:05,986 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:05,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:05,987 INFO L82 PathProgramCache]: Analyzing trace with hash -773258112, now seen corresponding path program 1 times [2020-12-09 19:03:05,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:05,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423074099] [2020-12-09 19:03:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:03:06,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423074099] [2020-12-09 19:03:06,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629360234] [2020-12-09 19:03:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:03:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:06,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-09 19:03:06,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:03:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:03:06,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:03:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:03:09,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [893933192] [2020-12-09 19:03:09,060 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2020-12-09 19:03:09,060 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:03:09,060 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:03:09,060 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:03:09,060 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:03:09,083 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:09,093 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:09,197 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:09,551 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:09,815 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:03:10,226 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 94 [2020-12-09 19:03:10,938 WARN L197 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 183 [2020-12-09 19:03:11,850 WARN L197 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 191 [2020-12-09 19:03:13,223 WARN L197 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 190 [2020-12-09 19:03:14,355 WARN L197 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 204 [2020-12-09 19:03:15,476 WARN L197 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 264 DAG size of output: 212 [2020-12-09 19:03:16,266 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-09 19:03:16,560 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-12-09 19:03:16,882 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-12-09 19:03:17,223 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-12-09 19:03:17,550 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-12-09 19:03:18,529 WARN L197 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 111 [2020-12-09 19:03:19,411 WARN L197 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2020-12-09 19:03:19,412 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:03:19,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 19:03:19,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2020-12-09 19:03:19,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096240283] [2020-12-09 19:03:19,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-09 19:03:19,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:19,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-09 19:03:19,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=930, Unknown=1, NotChecked=0, Total=1122 [2020-12-09 19:03:19,414 INFO L87 Difference]: Start difference. First operand 291 states and 362 transitions. Second operand 18 states. [2020-12-09 19:03:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:21,307 INFO L93 Difference]: Finished difference Result 515 states and 591 transitions. [2020-12-09 19:03:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 19:03:21,307 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2020-12-09 19:03:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:21,309 INFO L225 Difference]: With dead ends: 515 [2020-12-09 19:03:21,309 INFO L226 Difference]: Without dead ends: 515 [2020-12-09 19:03:21,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 48 SyntacticMatches, 12 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=380, Invalid=1875, Unknown=1, NotChecked=0, Total=2256 [2020-12-09 19:03:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-12-09 19:03:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 290. [2020-12-09 19:03:21,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-12-09 19:03:21,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 357 transitions. [2020-12-09 19:03:21,314 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 357 transitions. Word has length 29 [2020-12-09 19:03:21,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:21,314 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 357 transitions. [2020-12-09 19:03:21,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-09 19:03:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 357 transitions. [2020-12-09 19:03:21,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-09 19:03:21,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:21,315 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:21,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:03:21,516 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:21,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:21,516 INFO L82 PathProgramCache]: Analyzing trace with hash 899576228, now seen corresponding path program 1 times [2020-12-09 19:03:21,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:21,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454517162] [2020-12-09 19:03:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:03:21,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454517162] [2020-12-09 19:03:21,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507622738] [2020-12-09 19:03:21,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:03:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:21,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 19:03:21,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:03:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 19:03:22,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:03:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 19:03:22,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [571263211] [2020-12-09 19:03:22,415 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2020-12-09 19:03:22,415 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:03:22,416 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:03:22,416 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:03:22,416 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:03:22,538 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:22,547 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:22,556 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:23,126 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:03:23,317 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-12-09 19:03:23,527 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-09 19:03:23,791 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2020-12-09 19:03:24,071 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2020-12-09 19:03:24,375 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2020-12-09 19:03:24,683 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2020-12-09 19:03:27,649 WARN L197 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 272 DAG size of output: 209 [2020-12-09 19:03:30,157 WARN L197 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 264 DAG size of output: 194 [2020-12-09 19:03:32,647 WARN L197 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 272 DAG size of output: 199 [2020-12-09 19:03:34,533 WARN L197 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 269 DAG size of output: 188 [2020-12-09 19:03:36,517 WARN L197 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 283 DAG size of output: 199 [2020-12-09 19:03:36,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 19:03:36,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8, 6, 6] total 31 [2020-12-09 19:03:36,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565315286] [2020-12-09 19:03:36,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 19:03:36,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:36,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 19:03:36,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2020-12-09 19:03:36,520 INFO L87 Difference]: Start difference. First operand 290 states and 357 transitions. Second operand 13 states. [2020-12-09 19:03:37,803 WARN L197 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 216 DAG size of output: 197 [2020-12-09 19:03:39,002 WARN L197 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 201 DAG size of output: 191 [2020-12-09 19:03:39,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:39,676 INFO L93 Difference]: Finished difference Result 296 states and 354 transitions. [2020-12-09 19:03:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 19:03:39,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2020-12-09 19:03:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:39,679 INFO L225 Difference]: With dead ends: 296 [2020-12-09 19:03:39,679 INFO L226 Difference]: Without dead ends: 296 [2020-12-09 19:03:39,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=252, Invalid=870, Unknown=0, NotChecked=0, Total=1122 [2020-12-09 19:03:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-09 19:03:39,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 248. [2020-12-09 19:03:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-09 19:03:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 304 transitions. [2020-12-09 19:03:39,682 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 304 transitions. Word has length 29 [2020-12-09 19:03:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:39,683 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 304 transitions. [2020-12-09 19:03:39,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 19:03:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 304 transitions. [2020-12-09 19:03:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 19:03:39,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:39,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:39,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-12-09 19:03:39,885 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:39,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:39,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1919941886, now seen corresponding path program 1 times [2020-12-09 19:03:39,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:39,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124505596] [2020-12-09 19:03:39,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:39,942 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 19:03:39,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124505596] [2020-12-09 19:03:39,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:39,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:03:39,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307502408] [2020-12-09 19:03:39,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:03:39,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:39,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:03:39,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:03:39,944 INFO L87 Difference]: Start difference. First operand 248 states and 304 transitions. Second operand 4 states. [2020-12-09 19:03:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:40,001 INFO L93 Difference]: Finished difference Result 251 states and 301 transitions. [2020-12-09 19:03:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:03:40,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-09 19:03:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:40,003 INFO L225 Difference]: With dead ends: 251 [2020-12-09 19:03:40,003 INFO L226 Difference]: Without dead ends: 251 [2020-12-09 19:03:40,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:03:40,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-12-09 19:03:40,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 242. [2020-12-09 19:03:40,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-12-09 19:03:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 298 transitions. [2020-12-09 19:03:40,007 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 298 transitions. Word has length 30 [2020-12-09 19:03:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:40,007 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 298 transitions. [2020-12-09 19:03:40,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:03:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 298 transitions. [2020-12-09 19:03:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 19:03:40,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:40,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:40,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2020-12-09 19:03:40,007 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:40,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1919941630, now seen corresponding path program 1 times [2020-12-09 19:03:40,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:40,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587456821] [2020-12-09 19:03:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:40,028 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 19:03:40,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587456821] [2020-12-09 19:03:40,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:40,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:03:40,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401733046] [2020-12-09 19:03:40,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:03:40,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:40,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:03:40,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:03:40,029 INFO L87 Difference]: Start difference. First operand 242 states and 298 transitions. Second operand 3 states. [2020-12-09 19:03:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:40,036 INFO L93 Difference]: Finished difference Result 265 states and 328 transitions. [2020-12-09 19:03:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:03:40,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-09 19:03:40,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:40,038 INFO L225 Difference]: With dead ends: 265 [2020-12-09 19:03:40,038 INFO L226 Difference]: Without dead ends: 265 [2020-12-09 19:03:40,039 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 19:03:40,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-12-09 19:03:40,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 220. [2020-12-09 19:03:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-09 19:03:40,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 274 transitions. [2020-12-09 19:03:40,042 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 274 transitions. Word has length 30 [2020-12-09 19:03:40,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:40,042 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 274 transitions. [2020-12-09 19:03:40,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:03:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 274 transitions. [2020-12-09 19:03:40,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 19:03:40,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:40,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:40,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2020-12-09 19:03:40,042 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:40,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:40,043 INFO L82 PathProgramCache]: Analyzing trace with hash 611343845, now seen corresponding path program 1 times [2020-12-09 19:03:40,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:40,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590920342] [2020-12-09 19:03:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:40,068 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 19:03:40,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590920342] [2020-12-09 19:03:40,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:40,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:03:40,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603464484] [2020-12-09 19:03:40,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:03:40,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:40,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:03:40,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:03:40,069 INFO L87 Difference]: Start difference. First operand 220 states and 274 transitions. Second operand 4 states. [2020-12-09 19:03:40,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:40,151 INFO L93 Difference]: Finished difference Result 223 states and 271 transitions. [2020-12-09 19:03:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:03:40,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-09 19:03:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:40,153 INFO L225 Difference]: With dead ends: 223 [2020-12-09 19:03:40,153 INFO L226 Difference]: Without dead ends: 223 [2020-12-09 19:03:40,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:03:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-12-09 19:03:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 216. [2020-12-09 19:03:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-09 19:03:40,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 268 transitions. [2020-12-09 19:03:40,155 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 268 transitions. Word has length 31 [2020-12-09 19:03:40,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:40,156 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 268 transitions. [2020-12-09 19:03:40,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:03:40,156 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 268 transitions. [2020-12-09 19:03:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 19:03:40,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:40,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:40,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2020-12-09 19:03:40,156 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:40,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:40,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1771790180, now seen corresponding path program 1 times [2020-12-09 19:03:40,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:40,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757930541] [2020-12-09 19:03:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:40,180 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 19:03:40,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757930541] [2020-12-09 19:03:40,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:40,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:03:40,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882137147] [2020-12-09 19:03:40,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:03:40,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:40,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:03:40,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:03:40,181 INFO L87 Difference]: Start difference. First operand 216 states and 268 transitions. Second operand 4 states. [2020-12-09 19:03:40,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:40,313 INFO L93 Difference]: Finished difference Result 234 states and 285 transitions. [2020-12-09 19:03:40,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:03:40,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-12-09 19:03:40,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:40,314 INFO L225 Difference]: With dead ends: 234 [2020-12-09 19:03:40,314 INFO L226 Difference]: Without dead ends: 234 [2020-12-09 19:03:40,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:03:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-12-09 19:03:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 221. [2020-12-09 19:03:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-12-09 19:03:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 275 transitions. [2020-12-09 19:03:40,317 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 275 transitions. Word has length 32 [2020-12-09 19:03:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:40,317 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 275 transitions. [2020-12-09 19:03:40,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:03:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 275 transitions. [2020-12-09 19:03:40,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 19:03:40,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:40,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:40,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2020-12-09 19:03:40,318 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:40,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:40,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1689708849, now seen corresponding path program 1 times [2020-12-09 19:03:40,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:40,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799478251] [2020-12-09 19:03:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:40,360 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 19:03:40,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799478251] [2020-12-09 19:03:40,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:40,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 19:03:40,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24433066] [2020-12-09 19:03:40,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 19:03:40,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:40,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 19:03:40,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:03:40,361 INFO L87 Difference]: Start difference. First operand 221 states and 275 transitions. Second operand 6 states. [2020-12-09 19:03:40,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:40,505 INFO L93 Difference]: Finished difference Result 231 states and 281 transitions. [2020-12-09 19:03:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:03:40,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-12-09 19:03:40,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:40,506 INFO L225 Difference]: With dead ends: 231 [2020-12-09 19:03:40,506 INFO L226 Difference]: Without dead ends: 231 [2020-12-09 19:03:40,507 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 19:03:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-12-09 19:03:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 220. [2020-12-09 19:03:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-09 19:03:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 274 transitions. [2020-12-09 19:03:40,509 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 274 transitions. Word has length 36 [2020-12-09 19:03:40,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:40,510 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 274 transitions. [2020-12-09 19:03:40,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 19:03:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 274 transitions. [2020-12-09 19:03:40,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 19:03:40,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:40,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:40,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2020-12-09 19:03:40,510 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:40,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:40,510 INFO L82 PathProgramCache]: Analyzing trace with hash 841366936, now seen corresponding path program 1 times [2020-12-09 19:03:40,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:40,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593490759] [2020-12-09 19:03:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:40,903 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 19:03:40,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593490759] [2020-12-09 19:03:40,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:40,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-09 19:03:40,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565801580] [2020-12-09 19:03:40,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-09 19:03:40,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:40,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-09 19:03:40,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-12-09 19:03:40,904 INFO L87 Difference]: Start difference. First operand 220 states and 274 transitions. Second operand 17 states. [2020-12-09 19:03:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:41,321 INFO L93 Difference]: Finished difference Result 308 states and 360 transitions. [2020-12-09 19:03:41,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 19:03:41,322 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-12-09 19:03:41,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:41,323 INFO L225 Difference]: With dead ends: 308 [2020-12-09 19:03:41,323 INFO L226 Difference]: Without dead ends: 308 [2020-12-09 19:03:41,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2020-12-09 19:03:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-12-09 19:03:41,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 220. [2020-12-09 19:03:41,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-09 19:03:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 272 transitions. [2020-12-09 19:03:41,327 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 272 transitions. Word has length 37 [2020-12-09 19:03:41,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:41,327 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 272 transitions. [2020-12-09 19:03:41,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-09 19:03:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 272 transitions. [2020-12-09 19:03:41,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-09 19:03:41,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:41,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:41,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2020-12-09 19:03:41,329 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:41,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:41,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2078818679, now seen corresponding path program 1 times [2020-12-09 19:03:41,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:41,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799013734] [2020-12-09 19:03:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:41,357 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 19:03:41,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799013734] [2020-12-09 19:03:41,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:41,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:03:41,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299540971] [2020-12-09 19:03:41,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:03:41,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:41,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:03:41,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:03:41,359 INFO L87 Difference]: Start difference. First operand 220 states and 272 transitions. Second operand 4 states. [2020-12-09 19:03:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:41,418 INFO L93 Difference]: Finished difference Result 232 states and 277 transitions. [2020-12-09 19:03:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:03:41,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-12-09 19:03:41,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:41,420 INFO L225 Difference]: With dead ends: 232 [2020-12-09 19:03:41,420 INFO L226 Difference]: Without dead ends: 232 [2020-12-09 19:03:41,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 19:03:41,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-12-09 19:03:41,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 220. [2020-12-09 19:03:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-09 19:03:41,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 269 transitions. [2020-12-09 19:03:41,425 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 269 transitions. Word has length 38 [2020-12-09 19:03:41,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:41,425 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 269 transitions. [2020-12-09 19:03:41,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:03:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 269 transitions. [2020-12-09 19:03:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 19:03:41,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:41,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:41,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2020-12-09 19:03:41,426 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:41,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1099781306, now seen corresponding path program 1 times [2020-12-09 19:03:41,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:41,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559973853] [2020-12-09 19:03:41,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:41,522 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 19:03:41,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559973853] [2020-12-09 19:03:41,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:41,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 19:03:41,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220741952] [2020-12-09 19:03:41,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 19:03:41,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 19:03:41,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 19:03:41,523 INFO L87 Difference]: Start difference. First operand 220 states and 269 transitions. Second operand 8 states. [2020-12-09 19:03:41,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:41,881 INFO L93 Difference]: Finished difference Result 237 states and 278 transitions. [2020-12-09 19:03:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 19:03:41,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-12-09 19:03:41,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:41,883 INFO L225 Difference]: With dead ends: 237 [2020-12-09 19:03:41,883 INFO L226 Difference]: Without dead ends: 237 [2020-12-09 19:03:41,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-12-09 19:03:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-09 19:03:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 219. [2020-12-09 19:03:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-12-09 19:03:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 265 transitions. [2020-12-09 19:03:41,887 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 265 transitions. Word has length 39 [2020-12-09 19:03:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:41,887 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 265 transitions. [2020-12-09 19:03:41,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 19:03:41,887 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 265 transitions. [2020-12-09 19:03:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-09 19:03:41,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:41,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:41,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2020-12-09 19:03:41,888 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:41,888 INFO L82 PathProgramCache]: Analyzing trace with hash -266517645, now seen corresponding path program 1 times [2020-12-09 19:03:41,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:41,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782000563] [2020-12-09 19:03:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:41,997 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 19:03:41,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782000563] [2020-12-09 19:03:41,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:41,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 19:03:41,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643115099] [2020-12-09 19:03:41,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 19:03:41,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:41,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 19:03:41,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 19:03:41,998 INFO L87 Difference]: Start difference. First operand 219 states and 265 transitions. Second operand 8 states. [2020-12-09 19:03:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:42,359 INFO L93 Difference]: Finished difference Result 273 states and 315 transitions. [2020-12-09 19:03:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 19:03:42,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-12-09 19:03:42,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:42,361 INFO L225 Difference]: With dead ends: 273 [2020-12-09 19:03:42,361 INFO L226 Difference]: Without dead ends: 273 [2020-12-09 19:03:42,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-09 19:03:42,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-12-09 19:03:42,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 242. [2020-12-09 19:03:42,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-12-09 19:03:42,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 290 transitions. [2020-12-09 19:03:42,364 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 290 transitions. Word has length 40 [2020-12-09 19:03:42,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:42,364 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 290 transitions. [2020-12-09 19:03:42,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 19:03:42,364 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 290 transitions. [2020-12-09 19:03:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-09 19:03:42,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:42,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:42,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2020-12-09 19:03:42,365 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:42,365 INFO L82 PathProgramCache]: Analyzing trace with hash 286689185, now seen corresponding path program 1 times [2020-12-09 19:03:42,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:42,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746630993] [2020-12-09 19:03:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 19:03:42,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746630993] [2020-12-09 19:03:42,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:42,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:03:42,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690436821] [2020-12-09 19:03:42,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:03:42,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:42,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:03:42,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:03:42,426 INFO L87 Difference]: Start difference. First operand 242 states and 290 transitions. Second operand 5 states. [2020-12-09 19:03:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:42,503 INFO L93 Difference]: Finished difference Result 245 states and 289 transitions. [2020-12-09 19:03:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:03:42,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-09 19:03:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:42,505 INFO L225 Difference]: With dead ends: 245 [2020-12-09 19:03:42,505 INFO L226 Difference]: Without dead ends: 245 [2020-12-09 19:03:42,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:03:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-12-09 19:03:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 218. [2020-12-09 19:03:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-09 19:03:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 257 transitions. [2020-12-09 19:03:42,508 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 257 transitions. Word has length 41 [2020-12-09 19:03:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:42,508 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 257 transitions. [2020-12-09 19:03:42,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:03:42,508 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 257 transitions. [2020-12-09 19:03:42,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-09 19:03:42,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:42,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:42,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2020-12-09 19:03:42,509 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:42,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:42,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1001723951, now seen corresponding path program 1 times [2020-12-09 19:03:42,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:42,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170589897] [2020-12-09 19:03:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 19:03:42,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170589897] [2020-12-09 19:03:42,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:42,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 19:03:42,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902093097] [2020-12-09 19:03:42,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 19:03:42,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:42,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 19:03:42,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:03:42,639 INFO L87 Difference]: Start difference. First operand 218 states and 257 transitions. Second operand 7 states. [2020-12-09 19:03:42,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:42,888 INFO L93 Difference]: Finished difference Result 411 states and 471 transitions. [2020-12-09 19:03:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 19:03:42,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-12-09 19:03:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:42,890 INFO L225 Difference]: With dead ends: 411 [2020-12-09 19:03:42,890 INFO L226 Difference]: Without dead ends: 411 [2020-12-09 19:03:42,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-09 19:03:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-12-09 19:03:42,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 228. [2020-12-09 19:03:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-12-09 19:03:42,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 267 transitions. [2020-12-09 19:03:42,894 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 267 transitions. Word has length 45 [2020-12-09 19:03:42,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:42,895 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 267 transitions. [2020-12-09 19:03:42,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 19:03:42,895 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 267 transitions. [2020-12-09 19:03:42,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-09 19:03:42,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:42,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:42,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2020-12-09 19:03:42,895 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:03:42,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:42,896 INFO L82 PathProgramCache]: Analyzing trace with hash 661363442, now seen corresponding path program 1 times [2020-12-09 19:03:42,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:42,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687560768] [2020-12-09 19:03:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:03:43,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687560768] [2020-12-09 19:03:43,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860755908] [2020-12-09 19:03:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:03:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:43,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 19:03:43,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:03:43,481 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 37 [2020-12-09 19:03:44,442 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-09 19:03:44,615 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-09 19:03:44,783 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-09 19:03:45,348 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-12-09 19:03:45,497 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-09 19:03:45,983 WARN L197 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2020-12-09 19:03:46,210 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 34 [2020-12-09 19:03:46,949 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 35 [2020-12-09 19:03:47,343 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-09 19:03:47,541 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-12-09 19:03:48,028 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-12-09 19:03:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:03:48,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:03:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:03:48,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [42873247] [2020-12-09 19:03:48,937 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2020-12-09 19:03:48,937 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:03:48,938 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:03:48,938 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:03:48,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:03:48,965 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:49,078 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:49,090 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:49,325 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:49,574 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:03:50,202 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:03:51,009 WARN L197 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 183 [2020-12-09 19:03:52,105 WARN L197 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 191 [2020-12-09 19:03:53,777 WARN L197 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 190 [2020-12-09 19:03:55,109 WARN L197 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 235 DAG size of output: 204 [2020-12-09 19:03:56,650 WARN L197 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 255 DAG size of output: 218 [2020-12-09 19:03:58,587 WARN L197 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 260 DAG size of output: 217 [2020-12-09 19:04:00,029 WARN L197 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 256 DAG size of output: 213 [2020-12-09 19:04:01,256 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 243 DAG size of output: 202 [2020-12-09 19:04:02,795 WARN L197 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 259 DAG size of output: 210 [2020-12-09 19:04:05,248 WARN L197 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 269 DAG size of output: 207 [2020-12-09 19:04:06,946 WARN L197 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 271 DAG size of output: 210 [2020-12-09 19:04:09,099 WARN L197 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 273 DAG size of output: 219 [2020-12-09 19:04:11,855 WARN L197 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 281 DAG size of output: 220 [2020-12-09 19:04:14,753 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-12-09 19:04:16,759 WARN L197 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 381 DAG size of output: 378 [2020-12-09 19:04:19,035 WARN L197 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 393 DAG size of output: 386 [2020-12-09 19:04:26,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 19:04:26,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [11, 7, 7] total 42 [2020-12-09 19:04:26,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514950187] [2020-12-09 19:04:26,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-09 19:04:26,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:04:26,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-09 19:04:26,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2020-12-09 19:04:26,624 INFO L87 Difference]: Start difference. First operand 228 states and 267 transitions. Second operand 20 states. [2020-12-09 19:04:32,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:04:32,388 INFO L93 Difference]: Finished difference Result 281 states and 325 transitions. [2020-12-09 19:04:32,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-09 19:04:32,389 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 47 [2020-12-09 19:04:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:04:32,390 INFO L225 Difference]: With dead ends: 281 [2020-12-09 19:04:32,390 INFO L226 Difference]: Without dead ends: 281 [2020-12-09 19:04:32,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 68 SyntacticMatches, 41 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2020-12-09 19:04:32,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-12-09 19:04:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 275. [2020-12-09 19:04:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-12-09 19:04:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 320 transitions. [2020-12-09 19:04:32,394 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 320 transitions. Word has length 47 [2020-12-09 19:04:32,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:04:32,394 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 320 transitions. [2020-12-09 19:04:32,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-09 19:04:32,394 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 320 transitions. [2020-12-09 19:04:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-09 19:04:32,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:04:32,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:04:32,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:04:32,597 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:04:32,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:04:32,598 INFO L82 PathProgramCache]: Analyzing trace with hash 938422116, now seen corresponding path program 1 times [2020-12-09 19:04:32,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:04:32,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51937447] [2020-12-09 19:04:32,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:04:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:04:32,646 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 19:04:32,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51937447] [2020-12-09 19:04:32,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:04:32,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:04:32,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229413774] [2020-12-09 19:04:32,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:04:32,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:04:32,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:04:32,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:04:32,647 INFO L87 Difference]: Start difference. First operand 275 states and 320 transitions. Second operand 5 states. [2020-12-09 19:04:32,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:04:32,847 INFO L93 Difference]: Finished difference Result 322 states and 372 transitions. [2020-12-09 19:04:32,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 19:04:32,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-12-09 19:04:32,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:04:32,849 INFO L225 Difference]: With dead ends: 322 [2020-12-09 19:04:32,849 INFO L226 Difference]: Without dead ends: 322 [2020-12-09 19:04:32,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:04:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-12-09 19:04:32,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 274. [2020-12-09 19:04:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-12-09 19:04:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 320 transitions. [2020-12-09 19:04:32,852 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 320 transitions. Word has length 52 [2020-12-09 19:04:32,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:04:32,852 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 320 transitions. [2020-12-09 19:04:32,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:04:32,853 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 320 transitions. [2020-12-09 19:04:32,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-09 19:04:32,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:04:32,853 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:04:32,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2020-12-09 19:04:32,853 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:04:32,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:04:32,853 INFO L82 PathProgramCache]: Analyzing trace with hash 761952568, now seen corresponding path program 1 times [2020-12-09 19:04:32,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:04:32,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653683399] [2020-12-09 19:04:32,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:04:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:04:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:04:33,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653683399] [2020-12-09 19:04:33,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201485830] [2020-12-09 19:04:33,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:04:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:04:33,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-09 19:04:33,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:04:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:04:33,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:04:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:04:34,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1811920701] [2020-12-09 19:04:34,079 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2020-12-09 19:04:34,079 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:04:34,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:04:34,080 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:04:34,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:04:34,108 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:04:34,233 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:04:34,243 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:04:34,547 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:04:35,214 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:04:35,689 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 213 [2020-12-09 19:04:36,626 WARN L197 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 183 [2020-12-09 19:04:37,940 WARN L197 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 191 [2020-12-09 19:04:39,875 WARN L197 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 190 [2020-12-09 19:04:41,484 WARN L197 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 235 DAG size of output: 204 [2020-12-09 19:04:43,247 WARN L197 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 255 DAG size of output: 218 [2020-12-09 19:04:45,511 WARN L197 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 260 DAG size of output: 217 [2020-12-09 19:04:47,351 WARN L197 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 256 DAG size of output: 213 [2020-12-09 19:04:48,036 WARN L197 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-12-09 19:04:48,714 WARN L197 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-12-09 19:04:49,581 WARN L197 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 85 [2020-12-09 19:04:50,437 WARN L197 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-12-09 19:04:51,314 WARN L197 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 90 [2020-12-09 19:04:52,188 WARN L197 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2020-12-09 19:04:52,527 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-12-09 19:04:53,005 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-12-09 19:04:53,290 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-12-09 19:04:53,685 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-12-09 19:04:54,133 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-12-09 19:04:54,917 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2020-12-09 19:04:55,620 WARN L197 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 100 [2020-12-09 19:04:56,273 WARN L197 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2020-12-09 19:04:57,191 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 199 [2020-12-09 19:04:57,889 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2020-12-09 19:04:58,551 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-12-09 19:04:59,283 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 167 [2020-12-09 19:05:00,065 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 167 [2020-12-09 19:05:00,904 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 167 [2020-12-09 19:05:01,273 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:05:01,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 19:05:01,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 32 [2020-12-09 19:05:01,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888387148] [2020-12-09 19:05:01,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-09 19:05:01,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:05:01,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-09 19:05:01,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=3593, Unknown=0, NotChecked=0, Total=4032 [2020-12-09 19:05:01,275 INFO L87 Difference]: Start difference. First operand 274 states and 320 transitions. Second operand 34 states. [2020-12-09 19:05:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:05:04,918 INFO L93 Difference]: Finished difference Result 365 states and 408 transitions. [2020-12-09 19:05:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-09 19:05:04,920 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 53 [2020-12-09 19:05:04,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:05:04,921 INFO L225 Difference]: With dead ends: 365 [2020-12-09 19:05:04,921 INFO L226 Difference]: Without dead ends: 365 [2020-12-09 19:05:04,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 96 SyntacticMatches, 14 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3044 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=861, Invalid=5945, Unknown=0, NotChecked=0, Total=6806 [2020-12-09 19:05:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-12-09 19:05:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 220. [2020-12-09 19:05:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-09 19:05:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 254 transitions. [2020-12-09 19:05:04,925 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 254 transitions. Word has length 53 [2020-12-09 19:05:04,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:05:04,926 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 254 transitions. [2020-12-09 19:05:04,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-09 19:05:04,926 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 254 transitions. [2020-12-09 19:05:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-09 19:05:04,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:05:04,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:05:05,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2020-12-09 19:05:05,127 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:05:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:05:05,127 INFO L82 PathProgramCache]: Analyzing trace with hash -495767878, now seen corresponding path program 1 times [2020-12-09 19:05:05,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:05:05,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311718994] [2020-12-09 19:05:05,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:05:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:05:05,152 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:05:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:05:05,175 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:05:05,196 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:05:05,196 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:05:05,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2020-12-09 19:05:05,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:05:05 BoogieIcfgContainer [2020-12-09 19:05:05,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:05:05,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:05:05,250 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:05:05,250 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:05:05,250 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:01:36" (3/4) ... [2020-12-09 19:05:05,253 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 19:05:05,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:05:05,253 INFO L168 Benchmark]: Toolchain (without parser) took 209652.36 ms. Allocated memory was 104.9 MB in the beginning and 318.8 MB in the end (delta: 213.9 MB). Free memory was 68.7 MB in the beginning and 229.5 MB in the end (delta: -160.9 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:05:05,253 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 104.9 MB. Free memory is still 86.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:05:05,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.23 ms. Allocated memory is still 104.9 MB. Free memory was 68.5 MB in the beginning and 61.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:05:05,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.43 ms. Allocated memory is still 104.9 MB. Free memory was 61.7 MB in the beginning and 59.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:05:05,254 INFO L168 Benchmark]: Boogie Preprocessor took 36.74 ms. Allocated memory is still 104.9 MB. Free memory was 59.0 MB in the beginning and 56.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:05:05,254 INFO L168 Benchmark]: RCFGBuilder took 489.91 ms. Allocated memory is still 104.9 MB. Free memory was 56.9 MB in the beginning and 43.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:05:05,254 INFO L168 Benchmark]: TraceAbstraction took 208694.47 ms. Allocated memory was 104.9 MB in the beginning and 318.8 MB in the end (delta: 213.9 MB). Free memory was 43.4 MB in the beginning and 230.6 MB in the end (delta: -187.2 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:05:05,254 INFO L168 Benchmark]: Witness Printer took 2.76 ms. Allocated memory is still 318.8 MB. Free memory was 230.6 MB in the beginning and 229.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:05:05,255 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 104.9 MB. Free memory is still 86.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 374.23 ms. Allocated memory is still 104.9 MB. Free memory was 68.5 MB in the beginning and 61.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.43 ms. Allocated memory is still 104.9 MB. Free memory was 61.7 MB in the beginning and 59.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.74 ms. Allocated memory is still 104.9 MB. Free memory was 59.0 MB in the beginning and 56.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 489.91 ms. Allocated memory is still 104.9 MB. Free memory was 56.9 MB in the beginning and 43.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 208694.47 ms. Allocated memory was 104.9 MB in the beginning and 318.8 MB in the end (delta: 213.9 MB). Free memory was 43.4 MB in the beginning and 230.6 MB in the end (delta: -187.2 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. * Witness Printer took 2.76 ms. Allocated memory is still 318.8 MB. Free memory was 230.6 MB in the beginning and 229.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of strcmp at line 693, overapproximation of memtrack at line 722. Possible FailurePath: [L685] int state = STATE_1; [L686] char *global = 0; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L692] int i = 0; VAL [commands={5:0}, global={0:0}, state=0] [L692] COND TRUE i < 2 VAL [commands={5:0}, global={0:0}, state=0] [L693] EXPR commands[i].name VAL [commands={5:0}, global={0:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={0:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={0:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={0:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={0:0}, state=0] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [commands={5:0}, global={0:0}, state=0] [L694] COND TRUE state >= commands[i].state_needed [L695] commands[i].function [L702] char *x = (char *)malloc(sizeof(char)); VAL [commands={5:0}, global={0:0}, state=0] [L703] COND FALSE !(!x) VAL [commands={5:0}, global={0:0}, state=0] [L706] COND FALSE !(\read(*global)) VAL [commands={5:0}, global={0:0}, state=0] [L709] global = x [L710] state = STATE_2 VAL [commands={5:0}, global={-3:0}, state=1] [L692] int i = 0; VAL [commands={5:0}, global={-3:0}, state=1] [L692] COND TRUE i < 2 VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR commands[i].name VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [commands={5:0}, global={-3:0}, state=1] [L692] COND TRUE i < 2 VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR commands[i].name VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [commands={5:0}, global={-3:0}, state=1] [L692] COND FALSE !(i < 2) VAL [commands={5:0}, global={-3:0}, state=1] [L692] int i = 0; VAL [commands={5:0}, global={-3:0}, state=1] [L692] COND TRUE i < 2 VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR commands[i].name VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [commands={5:0}, global={-3:0}, state=1] [L692] COND TRUE i < 2 VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR commands[i].name VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [commands={5:0}, global={-3:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [commands={5:0}, global={-3:0}, state=1] [L692] COND FALSE !(i < 2) VAL [commands={5:0}, global={-3:0}, state=1] [L726] return 0; VAL [commands={5:0}, global={-3:0}, state=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 160 locations, 67 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 208.6s, OverallIterations: 35, TraceHistogramMax: 2, AutomataDifference: 24.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3612 SDtfs, 15934 SDslu, 6929 SDs, 0 SdLazy, 8844 SolverSat, 1779 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1043 GetRequests, 442 SyntacticMatches, 135 SemanticMatches, 466 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7845 ImplicationChecksByTransitivity, 160.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 34 MinimizatonAttempts, 2839 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 49.0s InterpolantComputationTime, 1194 NumberOfCodeBlocks, 1194 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 1347 ConstructedInterpolants, 154 QuantifiedInterpolants, 1063549 SizeOfPredicates, 85 NumberOfNonLiveVariables, 1884 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 52 InterpolantComputations, 25 PerfectInterpolantSequences, 35/139 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: OVERALL_TIME[ms]: 2786, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 70, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 124, TOOLS_POST_TIME[ms]: 1615, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 124, TOOLS_QUANTIFIERELIM_TIME[ms]: 1577, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 325, FLUID_QUERY_TIME[ms]: 7, FLUID_QUERIES: 210, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 7, DOMAIN_JOIN_TIME[ms]: 247, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 3, DOMAIN_WIDEN_TIME[ms]: 316, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 62, DOMAIN_ISBOTTOM_APPLICATIONS: 70, DOMAIN_ISBOTTOM_TIME[ms]: 493, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 555, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 554, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 13, DAG_COMPRESSION_PROCESSED_NODES: 1681, DAG_COMPRESSION_RETAINED_NODES: 205, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:05:06,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:05:06,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:05:06,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:05:06,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:05:06,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:05:06,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:05:06,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:05:06,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:05:06,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:05:06,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:05:06,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:05:06,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:05:06,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:05:06,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:05:06,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:05:06,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:05:06,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:05:06,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:05:06,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:05:06,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:05:06,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:05:06,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:05:06,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:05:06,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:05:06,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:05:06,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:05:06,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:05:06,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:05:06,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:05:06,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:05:06,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:05:06,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:05:06,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:05:06,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:05:06,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:05:06,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:05:06,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:05:06,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:05:06,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:05:06,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:05:06,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 19:05:06,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:05:06,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:05:06,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:05:06,830 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:05:06,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:05:06,830 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:05:06,830 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:05:06,830 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:05:06,831 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:05:06,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 19:05:06,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 19:05:06,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:05:06,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:05:06,832 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 19:05:06,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:05:06,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:05:06,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:05:06,832 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 19:05:06,832 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 19:05:06,832 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 19:05:06,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:05:06,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:05:06,833 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 19:05:06,833 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 19:05:06,833 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:05:06,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:05:06,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:05:06,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 19:05:06,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:05:06,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:05:06,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:05:06,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:05:06,834 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 19:05:06,834 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 19:05:06,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:05:06,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:05:06,834 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f6baa5dd-aca1-4847-8155-e078a142182d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b33005346e6b80bc2289c235b2b7a5c7f83b2de [2020-12-09 19:05:07,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:05:07,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:05:07,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:05:07,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:05:07,089 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:05:07,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2020-12-09 19:05:07,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/data/9c26bd2b8/6a33cb2b5bf34b6b8b999f14e8510775/FLAG086e53586 [2020-12-09 19:05:07,516 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:05:07,516 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2020-12-09 19:05:07,528 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/data/9c26bd2b8/6a33cb2b5bf34b6b8b999f14e8510775/FLAG086e53586 [2020-12-09 19:05:07,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/data/9c26bd2b8/6a33cb2b5bf34b6b8b999f14e8510775 [2020-12-09 19:05:07,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:05:07,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:05:07,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:05:07,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:05:07,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:05:07,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:05:07" (1/1) ... [2020-12-09 19:05:07,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d5eef13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:07, skipping insertion in model container [2020-12-09 19:05:07,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:05:07" (1/1) ... [2020-12-09 19:05:07,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:05:07,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:05:08,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:05:08,131 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:05:08,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:05:08,221 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:05:08,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08 WrapperNode [2020-12-09 19:05:08,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:05:08,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:05:08,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:05:08,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:05:08,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08" (1/1) ... [2020-12-09 19:05:08,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08" (1/1) ... [2020-12-09 19:05:08,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:05:08,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:05:08,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:05:08,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:05:08,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08" (1/1) ... [2020-12-09 19:05:08,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08" (1/1) ... [2020-12-09 19:05:08,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08" (1/1) ... [2020-12-09 19:05:08,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08" (1/1) ... [2020-12-09 19:05:08,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08" (1/1) ... [2020-12-09 19:05:08,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08" (1/1) ... [2020-12-09 19:05:08,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08" (1/1) ... [2020-12-09 19:05:08,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:05:08,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:05:08,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:05:08,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:05:08,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/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 19:05:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-12-09 19:05:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 19:05:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:05:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 19:05:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 19:05:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 19:05:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 19:05:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:05:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:05:08,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:05:08,956 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2020-12-09 19:05:08,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:05:08 BoogieIcfgContainer [2020-12-09 19:05:08,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:05:08,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:05:08,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:05:08,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:05:08,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:05:07" (1/3) ... [2020-12-09 19:05:08,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fb5c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:05:08, skipping insertion in model container [2020-12-09 19:05:08,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:08" (2/3) ... [2020-12-09 19:05:08,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fb5c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:05:08, skipping insertion in model container [2020-12-09 19:05:08,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:05:08" (3/3) ... [2020-12-09 19:05:08,965 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2020-12-09 19:05:08,978 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:05:08,982 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 67 error locations. [2020-12-09 19:05:08,990 INFO L253 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2020-12-09 19:05:09,005 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:05:09,005 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 19:05:09,005 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:05:09,005 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:05:09,005 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:05:09,005 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:05:09,005 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:05:09,005 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:05:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-12-09 19:05:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 19:05:09,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:05:09,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 19:05:09,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:05:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:05:09,029 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-12-09 19:05:09,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:05:09,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498288037] [2020-12-09 19:05:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 19:05:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:05:09,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 19:05:09,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:05:09,385 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2020-12-09 19:05:09,386 INFO L348 Elim1Store]: treesize reduction 355, result has 14.5 percent of original size [2020-12-09 19:05:09,387 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 6 case distinctions, treesize of input 24 treesize of output 65 [2020-12-09 19:05:09,399 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:09,463 INFO L625 ElimStorePlain]: treesize reduction 12, result has 83.6 percent of original size [2020-12-09 19:05:09,481 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:09,488 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:09,492 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:09,496 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:09,499 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:09,502 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:09,509 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-12-09 19:05:09,509 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:24, output treesize:63 [2020-12-09 19:05:09,517 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:09,520 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:09,523 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:09,525 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:09,527 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:09,530 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:09,562 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 19:05:09,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:05:09,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498288037] [2020-12-09 19:05:09,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:05:09,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 19:05:09,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110793396] [2020-12-09 19:05:09,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:05:09,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:05:09,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:05:09,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:05:09,583 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 3 states. [2020-12-09 19:05:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:05:09,836 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2020-12-09 19:05:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:05:09,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 19:05:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:05:09,847 INFO L225 Difference]: With dead ends: 177 [2020-12-09 19:05:09,847 INFO L226 Difference]: Without dead ends: 173 [2020-12-09 19:05:09,848 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 19:05:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-09 19:05:09,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 166. [2020-12-09 19:05:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-12-09 19:05:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 190 transitions. [2020-12-09 19:05:09,878 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 190 transitions. Word has length 4 [2020-12-09 19:05:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:05:09,878 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 190 transitions. [2020-12-09 19:05:09,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:05:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 190 transitions. [2020-12-09 19:05:09,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 19:05:09,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:05:09,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 19:05:10,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 19:05:10,082 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:05:10,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:05:10,085 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2020-12-09 19:05:10,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:05:10,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226903168] [2020-12-09 19:05:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 19:05:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:05:10,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 19:05:10,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:05:10,482 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-12-09 19:05:10,482 INFO L348 Elim1Store]: treesize reduction 190, result has 33.6 percent of original size [2020-12-09 19:05:10,483 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 5 case distinctions, treesize of input 21 treesize of output 101 [2020-12-09 19:05:10,490 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:10,602 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-12-09 19:05:10,603 INFO L625 ElimStorePlain]: treesize reduction 50, result has 53.7 percent of original size [2020-12-09 19:05:10,609 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 19:05:10,609 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:25, output treesize:11 [2020-12-09 19:05:10,625 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 19:05:10,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:05:10,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226903168] [2020-12-09 19:05:10,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:05:10,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:05:10,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175074685] [2020-12-09 19:05:10,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:05:10,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:05:10,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:05:10,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:05:10,628 INFO L87 Difference]: Start difference. First operand 166 states and 190 transitions. Second operand 4 states. [2020-12-09 19:05:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:05:10,963 INFO L93 Difference]: Finished difference Result 376 states and 420 transitions. [2020-12-09 19:05:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:05:10,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 19:05:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:05:10,967 INFO L225 Difference]: With dead ends: 376 [2020-12-09 19:05:10,967 INFO L226 Difference]: Without dead ends: 376 [2020-12-09 19:05:10,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:05:10,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-09 19:05:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 229. [2020-12-09 19:05:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-12-09 19:05:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 294 transitions. [2020-12-09 19:05:10,984 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 294 transitions. Word has length 4 [2020-12-09 19:05:10,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:05:10,984 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 294 transitions. [2020-12-09 19:05:10,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:05:10,984 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 294 transitions. [2020-12-09 19:05:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 19:05:10,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:05:10,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 19:05:11,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 19:05:11,187 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:05:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:05:11,189 INFO L82 PathProgramCache]: Analyzing trace with hash 28698698, now seen corresponding path program 1 times [2020-12-09 19:05:11,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:05:11,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825035405] [2020-12-09 19:05:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 19:05:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:05:11,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 19:05:11,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:05:11,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:11,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:11,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:11,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:11,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:11,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:11,587 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 47 [2020-12-09 19:05:11,588 INFO L348 Elim1Store]: treesize reduction 322, result has 20.7 percent of original size [2020-12-09 19:05:11,588 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 190 treesize of output 242 [2020-12-09 19:05:11,597 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-12-09 19:05:11,597 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:11,599 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 4, 2, 3, 1] term [2020-12-09 19:05:11,599 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:11,608 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:11,754 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-12-09 19:05:11,755 INFO L625 ElimStorePlain]: treesize reduction 99, result has 57.1 percent of original size [2020-12-09 19:05:11,811 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:11,811 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 65 [2020-12-09 19:05:11,813 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:11,940 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-12-09 19:05:11,940 INFO L625 ElimStorePlain]: treesize reduction 24, result has 83.3 percent of original size [2020-12-09 19:05:11,950 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 4 disjuncts [2020-12-09 19:05:11,953 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:11,955 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:11,958 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:11,961 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 13 disjuncts [2020-12-09 19:05:11,992 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-09 19:05:11,993 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:122, output treesize:122 [2020-12-09 19:05:11,997 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 4 disjuncts [2020-12-09 19:05:11,999 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:12,004 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:12,006 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:12,008 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 13 disjuncts [2020-12-09 19:05:12,080 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 4 disjuncts [2020-12-09 19:05:12,083 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:12,085 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:12,088 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:12,090 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 13 disjuncts [2020-12-09 19:05:12,324 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2020-12-09 19:05:12,389 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 51 treesize of output 27 [2020-12-09 19:05:12,391 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:12,441 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:12,445 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-12-09 19:05:12,445 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:98, output treesize:69 [2020-12-09 19:05:12,493 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 19:05:12,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:05:12,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825035405] [2020-12-09 19:05:12,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:05:12,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:05:12,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506213335] [2020-12-09 19:05:12,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:05:12,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:05:12,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:05:12,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:05:12,495 INFO L87 Difference]: Start difference. First operand 229 states and 294 transitions. Second operand 5 states. [2020-12-09 19:05:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:05:14,069 INFO L93 Difference]: Finished difference Result 486 states and 611 transitions. [2020-12-09 19:05:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 19:05:14,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-12-09 19:05:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:05:14,072 INFO L225 Difference]: With dead ends: 486 [2020-12-09 19:05:14,072 INFO L226 Difference]: Without dead ends: 486 [2020-12-09 19:05:14,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:05:14,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-12-09 19:05:14,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 278. [2020-12-09 19:05:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-09 19:05:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 373 transitions. [2020-12-09 19:05:14,089 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 373 transitions. Word has length 5 [2020-12-09 19:05:14,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:05:14,090 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 373 transitions. [2020-12-09 19:05:14,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:05:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 373 transitions. [2020-12-09 19:05:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:05:14,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:05:14,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:05:14,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 19:05:14,292 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:05:14,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:05:14,294 INFO L82 PathProgramCache]: Analyzing trace with hash 889659685, now seen corresponding path program 1 times [2020-12-09 19:05:14,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:05:14,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308706738] [2020-12-09 19:05:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 19:05:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:05:14,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 19:05:14,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:05:14,492 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_45|], 12=[|v_#valid_86|]} [2020-12-09 19:05:14,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:14,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:14,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:14,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:14,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:14,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:14,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:14,746 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-12-09 19:05:14,746 INFO L348 Elim1Store]: treesize reduction 48, result has 70.0 percent of original size [2020-12-09 19:05:14,747 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 117 [2020-12-09 19:05:14,749 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:14,961 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-12-09 19:05:14,962 INFO L625 ElimStorePlain]: treesize reduction 60, result has 71.6 percent of original size [2020-12-09 19:05:15,001 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:15,001 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 244 [2020-12-09 19:05:15,004 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-12-09 19:05:15,005 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:15,006 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 4, 2, 3, 1] term [2020-12-09 19:05:15,006 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:15,008 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:15,224 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-12-09 19:05:15,225 INFO L625 ElimStorePlain]: treesize reduction 105, result has 55.9 percent of original size [2020-12-09 19:05:15,239 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 19:05:15,245 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:15,245 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 21 [2020-12-09 19:05:15,246 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2020-12-09 19:05:15,404 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-12-09 19:05:15,405 INFO L625 ElimStorePlain]: treesize reduction 6, result has 95.0 percent of original size [2020-12-09 19:05:15,407 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,408 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,409 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,410 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:15,411 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,412 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,413 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:15,414 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,414 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:15,417 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,417 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,419 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:15,420 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,421 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:15,423 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,424 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:15,428 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:15,429 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-09 19:05:15,429 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:116, output treesize:117 [2020-12-09 19:05:15,431 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,432 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,432 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,433 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:15,434 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,434 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,435 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:15,435 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,436 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:15,437 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,438 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,439 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:15,440 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,440 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:15,442 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,443 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:15,445 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:15,519 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,520 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,521 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,521 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:15,523 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,523 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,524 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:15,524 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,525 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:15,527 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,528 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,532 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:15,534 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,534 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:15,536 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:15,537 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:15,718 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-12-09 19:05:15,758 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:15,763 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:15,769 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 6, 1] term [2020-12-09 19:05:15,769 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:15,799 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 15 treesize of output 7 [2020-12-09 19:05:15,799 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:15,951 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-12-09 19:05:15,952 INFO L625 ElimStorePlain]: treesize reduction 32, result has 79.1 percent of original size [2020-12-09 19:05:15,963 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 15 treesize of output 7 [2020-12-09 19:05:15,964 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:16,028 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:16,034 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 33 treesize of output 17 [2020-12-09 19:05:16,035 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:16,096 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:16,108 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 15 treesize of output 7 [2020-12-09 19:05:16,109 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:16,164 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:16,167 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 4 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-12-09 19:05:16,167 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 11 variables, input treesize:164, output treesize:79 [2020-12-09 19:05:16,251 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 19:05:16,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:05:16,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308706738] [2020-12-09 19:05:16,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:05:16,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:05:16,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292580610] [2020-12-09 19:05:16,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:05:16,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:05:16,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:05:16,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:05:16,252 INFO L87 Difference]: Start difference. First operand 278 states and 373 transitions. Second operand 5 states. [2020-12-09 19:05:16,527 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2020-12-09 19:05:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:05:17,458 INFO L93 Difference]: Finished difference Result 424 states and 499 transitions. [2020-12-09 19:05:17,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:05:17,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 19:05:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:05:17,461 INFO L225 Difference]: With dead ends: 424 [2020-12-09 19:05:17,461 INFO L226 Difference]: Without dead ends: 424 [2020-12-09 19:05:17,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:05:17,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-12-09 19:05:17,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 278. [2020-12-09 19:05:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-09 19:05:17,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 369 transitions. [2020-12-09 19:05:17,471 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 369 transitions. Word has length 6 [2020-12-09 19:05:17,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:05:17,471 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 369 transitions. [2020-12-09 19:05:17,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:05:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 369 transitions. [2020-12-09 19:05:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 19:05:17,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:05:17,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:05:17,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 19:05:17,674 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:05:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:05:17,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1809646508, now seen corresponding path program 1 times [2020-12-09 19:05:17,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:05:17,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632160739] [2020-12-09 19:05:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 19:05:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:05:17,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 19:05:17,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:05:17,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:18,006 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2020-12-09 19:05:18,007 INFO L348 Elim1Store]: treesize reduction 336, result has 15.2 percent of original size [2020-12-09 19:05:18,007 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 100 treesize of output 136 [2020-12-09 19:05:18,011 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:18,108 INFO L625 ElimStorePlain]: treesize reduction 26, result has 77.4 percent of original size [2020-12-09 19:05:18,121 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:18,121 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2020-12-09 19:05:18,122 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-09 19:05:18,206 INFO L625 ElimStorePlain]: treesize reduction 6, result has 92.8 percent of original size [2020-12-09 19:05:18,208 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:18,209 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:18,210 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:18,211 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:18,211 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:18,212 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 10 disjuncts [2020-12-09 19:05:18,217 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-12-09 19:05:18,218 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:58, output treesize:79 [2020-12-09 19:05:18,219 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:18,220 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:18,221 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:18,221 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:18,222 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:18,223 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 10 disjuncts [2020-12-09 19:05:18,255 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-09 19:05:18,256 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:18,256 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:18,257 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:18,258 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:18,259 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 10 disjuncts [2020-12-09 19:05:18,401 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 19:05:18,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:05:18,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632160739] [2020-12-09 19:05:18,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:05:18,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:05:18,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098610920] [2020-12-09 19:05:18,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:05:18,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:05:18,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:05:18,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:05:18,403 INFO L87 Difference]: Start difference. First operand 278 states and 369 transitions. Second operand 4 states. [2020-12-09 19:05:18,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:05:18,957 INFO L93 Difference]: Finished difference Result 371 states and 469 transitions. [2020-12-09 19:05:18,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:05:18,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 19:05:18,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:05:18,959 INFO L225 Difference]: With dead ends: 371 [2020-12-09 19:05:18,959 INFO L226 Difference]: Without dead ends: 371 [2020-12-09 19:05:18,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:05:18,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-12-09 19:05:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 297. [2020-12-09 19:05:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-12-09 19:05:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 401 transitions. [2020-12-09 19:05:18,967 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 401 transitions. Word has length 7 [2020-12-09 19:05:18,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:05:18,967 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 401 transitions. [2020-12-09 19:05:18,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:05:18,967 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 401 transitions. [2020-12-09 19:05:18,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 19:05:18,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:05:18,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:05:19,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 19:05:19,169 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:05:19,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:05:19,170 INFO L82 PathProgramCache]: Analyzing trace with hash 264466951, now seen corresponding path program 1 times [2020-12-09 19:05:19,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:05:19,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345867952] [2020-12-09 19:05:19,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 19:05:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:05:19,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 19:05:19,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:05:19,265 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_46|], 4=[|v_#valid_88|]} [2020-12-09 19:05:19,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:19,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:19,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:19,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:19,493 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-12-09 19:05:19,493 INFO L348 Elim1Store]: treesize reduction 108, result has 47.1 percent of original size [2020-12-09 19:05:19,493 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 101 [2020-12-09 19:05:19,495 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:19,625 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-12-09 19:05:19,625 INFO L625 ElimStorePlain]: treesize reduction 50, result has 65.0 percent of original size [2020-12-09 19:05:19,636 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 39 treesize of output 37 [2020-12-09 19:05:19,638 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-09 19:05:19,766 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-09 19:05:19,767 INFO L625 ElimStorePlain]: treesize reduction 22, result has 80.0 percent of original size [2020-12-09 19:05:19,773 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 19:05:19,778 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:19,778 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 17 [2020-12-09 19:05:19,779 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2020-12-09 19:05:19,899 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-09 19:05:19,899 INFO L625 ElimStorePlain]: treesize reduction 6, result has 92.5 percent of original size [2020-12-09 19:05:19,901 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:19,901 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:19,901 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,902 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,902 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,903 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,903 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,904 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,905 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,905 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-09 19:05:19,906 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:19,906 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,907 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,907 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,909 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,909 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:19,910 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,910 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,911 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,911 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,912 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,912 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,913 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:19,913 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,914 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,914 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:19,916 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,917 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,918 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:19,924 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,924 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,925 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:19,927 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,927 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,928 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,928 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,929 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:19,929 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,931 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,932 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,932 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:19,934 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,935 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,935 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,936 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:19,937 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,937 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,937 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:19,938 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,939 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:19,941 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,941 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,942 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,943 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,943 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,943 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,946 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:19,947 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:19,947 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,948 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,948 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,949 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,949 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,950 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:19,951 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:19,951 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,951 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,952 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,953 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,953 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,954 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:19,955 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,955 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,956 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:19,956 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:19,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,959 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:19,960 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,961 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,961 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:19,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,964 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,965 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,965 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:19,967 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,967 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,968 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:19,970 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,971 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,971 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:19,974 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-12-09 19:05:19,974 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 8 variables, input treesize:60, output treesize:74 [2020-12-09 19:05:19,976 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:19,977 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:19,977 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,978 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,978 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,979 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,980 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,980 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,981 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,982 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-09 19:05:19,982 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:19,983 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,983 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,984 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,985 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,985 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,986 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,986 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:19,987 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,989 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,989 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,990 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,991 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:19,992 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:19,992 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,993 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:19,993 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:19,994 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:19,999 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,000 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,001 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:20,006 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,006 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,007 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,010 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,010 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,011 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,011 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,012 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,013 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,013 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,014 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,015 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,016 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,016 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,018 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,018 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,019 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,019 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,020 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,020 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,020 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,021 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,021 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,023 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,023 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,024 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,024 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,025 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,025 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,026 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,026 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,027 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,028 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,028 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,028 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,029 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,029 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,030 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,030 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:20,031 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,031 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,031 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,032 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,033 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,033 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,033 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:20,034 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,035 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,035 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,035 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,036 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:20,037 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,037 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,037 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,038 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,039 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,039 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:20,041 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,041 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:20,043 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,044 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,044 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:20,046 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,047 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,047 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:20,068 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,068 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,069 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,069 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,069 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,070 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,071 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,071 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,072 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,072 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-09 19:05:20,073 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,073 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,074 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,074 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,075 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,075 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,076 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,076 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:20,077 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,078 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,078 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,079 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,081 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,082 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:20,083 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,083 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,084 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,084 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:20,085 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,086 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,087 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,087 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,088 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,089 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,090 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,090 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,091 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,091 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,092 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,092 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,093 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,094 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,095 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,095 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,096 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,096 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,097 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:20,097 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,098 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,099 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,099 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:20,101 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,101 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,103 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,104 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,104 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:20,108 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,108 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,109 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,109 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:20,110 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,111 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,112 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,112 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,113 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,115 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:05:20,115 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,116 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,116 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,117 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,117 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,118 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,118 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-09 19:05:20,119 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,119 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,120 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,121 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,121 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,121 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,122 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:20,123 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,123 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,124 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,124 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,125 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:20,126 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-09 19:05:20,131 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,131 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,132 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:20,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:20,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,135 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,135 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,136 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:20,136 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,137 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:20,137 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 19:05:20,139 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,139 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 19:05:20,140 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 19:05:20,320 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 35 [2020-12-09 19:05:20,416 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 19:05:20,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:05:20,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345867952] [2020-12-09 19:05:20,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:05:20,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:05:20,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159906733] [2020-12-09 19:05:20,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:05:20,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:05:20,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:05:20,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:05:20,417 INFO L87 Difference]: Start difference. First operand 297 states and 401 transitions. Second operand 4 states. [2020-12-09 19:05:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:05:21,081 INFO L93 Difference]: Finished difference Result 367 states and 464 transitions. [2020-12-09 19:05:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:05:21,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 19:05:21,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:05:21,084 INFO L225 Difference]: With dead ends: 367 [2020-12-09 19:05:21,084 INFO L226 Difference]: Without dead ends: 367 [2020-12-09 19:05:21,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:05:21,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-12-09 19:05:21,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 296. [2020-12-09 19:05:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-12-09 19:05:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 399 transitions. [2020-12-09 19:05:21,092 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 399 transitions. Word has length 8 [2020-12-09 19:05:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:05:21,092 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 399 transitions. [2020-12-09 19:05:21,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:05:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 399 transitions. [2020-12-09 19:05:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 19:05:21,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:05:21,093 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:05:21,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 19:05:21,295 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:05:21,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:05:21,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1118504467, now seen corresponding path program 1 times [2020-12-09 19:05:21,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:05:21,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381109250] [2020-12-09 19:05:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 19:05:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:05:21,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 19:05:21,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:05:21,620 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-12-09 19:05:21,621 INFO L348 Elim1Store]: treesize reduction 190, result has 33.6 percent of original size [2020-12-09 19:05:21,621 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 5 case distinctions, treesize of input 21 treesize of output 101 [2020-12-09 19:05:21,623 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:21,710 INFO L625 ElimStorePlain]: treesize reduction 50, result has 53.7 percent of original size [2020-12-09 19:05:21,713 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 19:05:21,713 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:25, output treesize:11 [2020-12-09 19:05:21,743 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 19:05:21,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:05:21,985 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 19:05:21,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381109250] [2020-12-09 19:05:21,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [650622524] [2020-12-09 19:05:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt [2020-12-09 19:05:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:05:22,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 19:05:22,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:05:22,330 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-12-09 19:05:22,331 INFO L348 Elim1Store]: treesize reduction 190, result has 33.6 percent of original size [2020-12-09 19:05:22,331 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 5 case distinctions, treesize of input 21 treesize of output 101 [2020-12-09 19:05:22,333 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:22,416 INFO L625 ElimStorePlain]: treesize reduction 50, result has 53.7 percent of original size [2020-12-09 19:05:22,419 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 19:05:22,419 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:25, output treesize:11 [2020-12-09 19:05:22,432 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 19:05:22,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:05:22,441 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 19:05:22,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798787268] [2020-12-09 19:05:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:05:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:05:22,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 19:05:22,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:05:22,739 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-12-09 19:05:22,740 INFO L348 Elim1Store]: treesize reduction 190, result has 33.6 percent of original size [2020-12-09 19:05:22,740 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 5 case distinctions, treesize of input 21 treesize of output 101 [2020-12-09 19:05:22,742 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:22,823 INFO L625 ElimStorePlain]: treesize reduction 50, result has 53.7 percent of original size [2020-12-09 19:05:22,825 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 19:05:22,826 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:25, output treesize:11 [2020-12-09 19:05:22,838 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 19:05:22,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:05:23,061 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 19:05:23,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 19:05:23,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 4] total 8 [2020-12-09 19:05:23,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087397506] [2020-12-09 19:05:23,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 19:05:23,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:05:23,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 19:05:23,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-09 19:05:23,063 INFO L87 Difference]: Start difference. First operand 296 states and 399 transitions. Second operand 10 states. [2020-12-09 19:05:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:05:24,884 INFO L93 Difference]: Finished difference Result 808 states and 965 transitions. [2020-12-09 19:05:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 19:05:24,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-12-09 19:05:24,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:05:24,889 INFO L225 Difference]: With dead ends: 808 [2020-12-09 19:05:24,889 INFO L226 Difference]: Without dead ends: 808 [2020-12-09 19:05:24,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-12-09 19:05:24,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-12-09 19:05:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 411. [2020-12-09 19:05:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-12-09 19:05:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 581 transitions. [2020-12-09 19:05:24,903 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 581 transitions. Word has length 12 [2020-12-09 19:05:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:05:24,903 INFO L481 AbstractCegarLoop]: Abstraction has 411 states and 581 transitions. [2020-12-09 19:05:24,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 19:05:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 581 transitions. [2020-12-09 19:05:24,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 19:05:24,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:05:24,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:05:25,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt,8 mathsat -unsat_core_generation=3,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:05:25,507 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 19:05:25,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:05:25,508 INFO L82 PathProgramCache]: Analyzing trace with hash -313900157, now seen corresponding path program 1 times [2020-12-09 19:05:25,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:05:25,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155230653] [2020-12-09 19:05:25,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 19:05:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:05:25,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 19:05:25,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:05:25,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 19:05:25,976 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 44 [2020-12-09 19:05:25,976 INFO L348 Elim1Store]: treesize reduction 429, result has 15.7 percent of original size [2020-12-09 19:05:25,976 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 case distinctions, treesize of input 179 treesize of output 229 [2020-12-09 19:05:25,979 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-12-09 19:05:25,979 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:25,980 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 2, 1] term [2020-12-09 19:05:25,981 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:25,984 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:26,157 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-12-09 19:05:26,158 INFO L625 ElimStorePlain]: treesize reduction 90, result has 59.8 percent of original size [2020-12-09 19:05:26,181 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:26,181 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2020-12-09 19:05:26,182 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-09 19:05:26,317 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-09 19:05:26,318 INFO L625 ElimStorePlain]: treesize reduction 6, result has 95.3 percent of original size [2020-12-09 19:05:26,320 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 4 disjuncts [2020-12-09 19:05:26,323 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 4 disjuncts [2020-12-09 19:05:26,324 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:26,325 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:26,326 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 12 disjuncts [2020-12-09 19:05:26,338 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-09 19:05:26,338 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:102, output treesize:124 [2020-12-09 19:05:26,340 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 4 disjuncts [2020-12-09 19:05:26,341 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 4 disjuncts [2020-12-09 19:05:26,342 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:26,342 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:26,343 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 12 disjuncts [2020-12-09 19:05:26,382 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 4 disjuncts [2020-12-09 19:05:26,383 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 4 disjuncts [2020-12-09 19:05:26,384 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 5 disjuncts [2020-12-09 19:05:26,385 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:26,386 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 12 disjuncts [2020-12-09 19:05:32,150 WARN L197 SmtUtils]: Spent 5.68 s on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-12-09 19:05:34,716 WARN L197 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 113 [2020-12-09 19:05:34,742 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 7, 1] term [2020-12-09 19:05:34,743 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 19:05:34,768 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 41 treesize of output 21 [2020-12-09 19:05:34,769 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:34,927 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-12-09 19:05:34,928 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:34,934 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 41 treesize of output 21 [2020-12-09 19:05:34,935 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:35,088 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-12-09 19:05:35,088 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:35,099 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 41 treesize of output 21 [2020-12-09 19:05:35,100 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:35,272 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-09 19:05:35,273 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:35,282 INFO L547 ElimStorePlain]: Start of recursive call 1: 13 dim-0 vars, 3 dim-2 vars, End of recursive call: 13 dim-0 vars, and 3 xjuncts. [2020-12-09 19:05:35,282 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 16 variables, input treesize:276, output treesize:209 [2020-12-09 19:05:35,429 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 32 [2020-12-09 19:05:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:05:35,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:05:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:05:35,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155230653] [2020-12-09 19:05:35,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1935321170] [2020-12-09 19:05:35,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt [2020-12-09 19:05:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:05:35,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 19:05:35,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:05:36,193 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 53 [2020-12-09 19:05:36,193 INFO L348 Elim1Store]: treesize reduction 591, result has 15.0 percent of original size [2020-12-09 19:05:36,194 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 249 treesize of output 315 [2020-12-09 19:05:36,196 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 3, 1] term [2020-12-09 19:05:36,196 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:36,196 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-12-09 19:05:36,196 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:36,197 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 7, 3, 3, 2, 3, 1] term [2020-12-09 19:05:36,198 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:36,198 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 3, 3, 2, 3, 1] term [2020-12-09 19:05:36,198 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:36,199 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 4, 3, 3, 3, 3, 3, 2, 2, 1] term [2020-12-09 19:05:36,199 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:36,200 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 5, 3, 3, 3, 3, 2, 2, 1] term [2020-12-09 19:05:36,200 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:36,201 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 5, 3, 3, 2, 3, 1] term [2020-12-09 19:05:36,201 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:05:36,201 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 3, 3, 2, 3, 1] term [2020-12-09 19:05:36,201 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:36,202 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-12-09 19:05:36,202 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:05:36,210 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:05:36,410 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2020-12-09 19:05:36,411 INFO L625 ElimStorePlain]: treesize reduction 315, result has 32.8 percent of original size [2020-12-09 19:05:36,413 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:36,414 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:36,415 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:36,415 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 12 disjuncts [2020-12-09 19:05:36,418 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-09 19:05:36,418 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:122, output treesize:156 [2020-12-09 19:05:36,420 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:36,420 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:36,421 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:36,422 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 12 disjuncts [2020-12-09 19:05:36,532 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 3 disjuncts [2020-12-09 19:05:36,532 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:36,533 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 6 disjuncts [2020-12-09 19:05:36,534 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 12 disjuncts [2020-12-09 19:05:41,147 WARN L197 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2020-12-09 19:05:42,190 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-09 19:05:42,211 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 9, 1] term [2020-12-09 19:05:42,211 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 19:05:42,221 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 19:05:42,247 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 40 [2020-12-09 19:05:42,249 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 19:05:42,417 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-12-09 19:05:42,417 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:42,426 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 40 [2020-12-09 19:05:42,428 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 19:05:42,609 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-12-09 19:05:42,609 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:42,617 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 40 [2020-12-09 19:05:42,619 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 19:05:42,757 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-09 19:05:42,758 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:05:42,764 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 3 dim-2 vars, End of recursive call: 11 dim-0 vars, and 3 xjuncts. [2020-12-09 19:05:42,764 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 10 variables, input treesize:340, output treesize:219 [2020-12-09 19:05:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:05:42,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:05:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:05:43,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134169968] [2020-12-09 19:05:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f6baa5dd-aca1-4847-8155-e078a142182d/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:05:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:05:43,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:05:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:05:43,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:05:43,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3,12 cvc4 --incremental --print-success --lang smt [2020-12-09 19:05:43,826 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: Tracecheck IpTcStrategyModuleMathsat [155230653] said UNSAT, interpolant generator IpTcStrategyModuleZ3 [2134169968] failed with TRACE_FEASIBLE at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:326) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 19:05:43,835 INFO L168 Benchmark]: Toolchain (without parser) took 35967.27 ms. Allocated memory was 67.1 MB in the beginning and 109.1 MB in the end (delta: 41.9 MB). Free memory was 49.0 MB in the beginning and 77.2 MB in the end (delta: -28.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:05:43,835 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 67.1 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:05:43,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.04 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 48.8 MB in the beginning and 72.6 MB in the end (delta: -23.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:05:43,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.76 ms. Allocated memory is still 90.2 MB. Free memory was 72.6 MB in the beginning and 69.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:05:43,836 INFO L168 Benchmark]: Boogie Preprocessor took 33.17 ms. Allocated memory is still 90.2 MB. Free memory was 69.7 MB in the beginning and 67.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:05:43,836 INFO L168 Benchmark]: RCFGBuilder took 657.86 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 46.1 MB in the end (delta: 21.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:05:43,837 INFO L168 Benchmark]: TraceAbstraction took 34873.70 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 46.1 MB in the beginning and 77.2 MB in the end (delta: -31.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:05:43,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 67.1 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 354.04 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 48.8 MB in the beginning and 72.6 MB in the end (delta: -23.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.76 ms. Allocated memory is still 90.2 MB. Free memory was 72.6 MB in the beginning and 69.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.17 ms. Allocated memory is still 90.2 MB. Free memory was 69.7 MB in the beginning and 67.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 657.86 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 46.1 MB in the end (delta: 21.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 34873.70 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 46.1 MB in the beginning and 77.2 MB in the end (delta: -31.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: Tracecheck IpTcStrategyModuleMathsat [155230653] said UNSAT, interpolant generator IpTcStrategyModuleZ3 [2134169968] failed with TRACE_FEASIBLE de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: Tracecheck IpTcStrategyModuleMathsat [155230653] said UNSAT, interpolant generator IpTcStrategyModuleZ3 [2134169968] failed with TRACE_FEASIBLE: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:326) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...