./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-token-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:36:02,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:36:02,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:36:02,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:36:02,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:36:02,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:36:02,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:36:02,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:36:02,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:36:02,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:36:02,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:36:02,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:36:02,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:36:02,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:36:02,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:36:02,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:36:02,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:36:02,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:36:02,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:36:02,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:36:02,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:36:02,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:36:02,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:36:02,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:36:02,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:36:02,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:36:02,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:36:02,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:36:02,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:36:02,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:36:02,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:36:02,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:36:02,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:36:02,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:36:02,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:36:02,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:36:02,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:36:02,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:36:02,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:36:02,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:36:02,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:36:02,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:36:02,898 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:36:02,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:36:02,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:36:02,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:36:02,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:36:02,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:36:02,901 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:36:02,901 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:36:02,901 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:36:02,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:36:02,903 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:36:02,903 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:36:02,903 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:36:02,903 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:36:02,904 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:36:02,904 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:36:02,904 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:36:02,905 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:36:02,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:36:02,906 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:36:02,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:36:02,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:36:02,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:36:02,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:36:02,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:36:02,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:36:02,908 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:36:02,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:36:02,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:36:02,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:36:02,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:36:02,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:36:02,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:36:02,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:36:02,910 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:36:02,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:36:02,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:36:02,911 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:36:02,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:36:02,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:36:02,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:36:02,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 [2022-10-17 17:36:03,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:36:03,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:36:03,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:36:03,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:36:03,259 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:36:03,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/forester-heap/dll-token-1.i [2022-10-17 17:36:03,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/data/c1bda21bd/21215412701a41d098a8d624770312bc/FLAG1505f783c [2022-10-17 17:36:03,974 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:36:03,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i [2022-10-17 17:36:03,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/data/c1bda21bd/21215412701a41d098a8d624770312bc/FLAG1505f783c [2022-10-17 17:36:04,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/data/c1bda21bd/21215412701a41d098a8d624770312bc [2022-10-17 17:36:04,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:36:04,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:36:04,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:04,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:36:04,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:36:04,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cee3cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04, skipping insertion in model container [2022-10-17 17:36:04,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:36:04,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:36:04,720 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22229,22242] [2022-10-17 17:36:04,739 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22398,22411] [2022-10-17 17:36:04,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22489,22502] [2022-10-17 17:36:04,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22571,22584] [2022-10-17 17:36:04,748 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22649,22662] [2022-10-17 17:36:04,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22795,22808] [2022-10-17 17:36:04,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:36:04,771 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:36:04,847 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22229,22242] [2022-10-17 17:36:04,855 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22398,22411] [2022-10-17 17:36:04,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22489,22502] [2022-10-17 17:36:04,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22571,22584] [2022-10-17 17:36:04,863 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22649,22662] [2022-10-17 17:36:04,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/sv-benchmarks/c/forester-heap/dll-token-1.i[22795,22808] [2022-10-17 17:36:04,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:36:04,900 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:36:04,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04 WrapperNode [2022-10-17 17:36:04,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:04,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:36:04,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:36:04,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:36:04,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,950 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 130 [2022-10-17 17:36:04,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:36:04,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:36:04,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:36:04,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:36:04,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,989 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:04,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:36:04,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:36:04,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:36:04,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:36:05,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (1/1) ... [2022-10-17 17:36:05,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:36:05,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:05,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:36:05,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:36:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:36:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:36:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:36:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:36:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:36:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:36:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:36:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:36:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:36:05,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:36:05,271 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:36:05,274 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:36:05,720 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:36:05,753 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:36:05,754 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-10-17 17:36:05,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:36:05 BoogieIcfgContainer [2022-10-17 17:36:05,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:36:05,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:36:05,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:36:05,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:36:05,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:36:04" (1/3) ... [2022-10-17 17:36:05,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afe609f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:36:05, skipping insertion in model container [2022-10-17 17:36:05,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:04" (2/3) ... [2022-10-17 17:36:05,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afe609f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:36:05, skipping insertion in model container [2022-10-17 17:36:05,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:36:05" (3/3) ... [2022-10-17 17:36:05,774 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-token-1.i [2022-10-17 17:36:05,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:36:05,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-17 17:36:05,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:36:05,901 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@38cdd20f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:36:05,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 17:36:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:36:05,915 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:05,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:36:05,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:36:05,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:05,927 INFO L85 PathProgramCache]: Analyzing trace with hash 177379778, now seen corresponding path program 1 times [2022-10-17 17:36:05,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:05,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243593987] [2022-10-17 17:36:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:05,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:06,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:06,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243593987] [2022-10-17 17:36:06,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243593987] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:06,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:06,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:36:06,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840139781] [2022-10-17 17:36:06,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:06,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:36:06,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:06,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:36:06,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:36:06,364 INFO L87 Difference]: Start difference. First operand has 41 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:06,419 INFO L93 Difference]: Finished difference Result 81 states and 127 transitions. [2022-10-17 17:36:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:36:06,424 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-17 17:36:06,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:06,432 INFO L225 Difference]: With dead ends: 81 [2022-10-17 17:36:06,432 INFO L226 Difference]: Without dead ends: 38 [2022-10-17 17:36:06,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:36:06,441 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:06,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-17 17:36:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-10-17 17:36:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.25) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-10-17 17:36:06,484 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 5 [2022-10-17 17:36:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:06,485 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-10-17 17:36:06,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:06,486 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-10-17 17:36:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:36:06,486 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:06,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:36:06,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:36:06,488 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:36:06,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:06,489 INFO L85 PathProgramCache]: Analyzing trace with hash 176613157, now seen corresponding path program 1 times [2022-10-17 17:36:06,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:06,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458419957] [2022-10-17 17:36:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:06,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:07,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:07,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458419957] [2022-10-17 17:36:07,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458419957] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:07,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:07,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:36:07,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636953459] [2022-10-17 17:36:07,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:07,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:36:07,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:07,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:36:07,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:36:07,048 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:07,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:07,174 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-10-17 17:36:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:36:07,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-17 17:36:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:07,180 INFO L225 Difference]: With dead ends: 38 [2022-10-17 17:36:07,181 INFO L226 Difference]: Without dead ends: 36 [2022-10-17 17:36:07,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:36:07,189 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:07,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 72 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:36:07,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-17 17:36:07,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-10-17 17:36:07,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2022-10-17 17:36:07,204 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 5 [2022-10-17 17:36:07,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:07,205 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2022-10-17 17:36:07,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:07,206 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-10-17 17:36:07,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:36:07,207 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:07,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:36:07,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:36:07,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:36:07,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:07,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1179997057, now seen corresponding path program 1 times [2022-10-17 17:36:07,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:07,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652346399] [2022-10-17 17:36:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:07,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:07,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:07,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652346399] [2022-10-17 17:36:07,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652346399] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:07,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:07,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:36:07,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763150181] [2022-10-17 17:36:07,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:07,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:36:07,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:36:07,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:36:07,520 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:07,635 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2022-10-17 17:36:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:36:07,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-17 17:36:07,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:07,641 INFO L225 Difference]: With dead ends: 62 [2022-10-17 17:36:07,641 INFO L226 Difference]: Without dead ends: 60 [2022-10-17 17:36:07,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:36:07,646 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 72 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:07,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 44 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:36:07,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-10-17 17:36:07,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2022-10-17 17:36:07,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2022-10-17 17:36:07,668 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 6 [2022-10-17 17:36:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:07,669 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2022-10-17 17:36:07,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-10-17 17:36:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:36:07,670 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:07,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:07,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:36:07,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:36:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:07,676 INFO L85 PathProgramCache]: Analyzing trace with hash -941369743, now seen corresponding path program 1 times [2022-10-17 17:36:07,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:07,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040322582] [2022-10-17 17:36:07,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:07,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:07,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:07,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040322582] [2022-10-17 17:36:07,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040322582] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:07,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:07,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:36:07,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794292467] [2022-10-17 17:36:07,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:07,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:36:07,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:07,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:36:07,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:36:07,893 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:08,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:08,017 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-10-17 17:36:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:36:08,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-17 17:36:08,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:08,019 INFO L225 Difference]: With dead ends: 34 [2022-10-17 17:36:08,020 INFO L226 Difference]: Without dead ends: 32 [2022-10-17 17:36:08,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:36:08,028 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:08,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 87 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:36:08,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-17 17:36:08,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-17 17:36:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-10-17 17:36:08,040 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 11 [2022-10-17 17:36:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:08,040 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-10-17 17:36:08,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:08,041 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-10-17 17:36:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:36:08,041 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:08,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:08,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:36:08,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:36:08,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:08,043 INFO L85 PathProgramCache]: Analyzing trace with hash -941332007, now seen corresponding path program 1 times [2022-10-17 17:36:08,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:08,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790942868] [2022-10-17 17:36:08,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:08,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:09,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:09,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790942868] [2022-10-17 17:36:09,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790942868] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:09,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:09,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:36:09,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996095865] [2022-10-17 17:36:09,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:09,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:36:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:36:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:36:09,249 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:09,392 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2022-10-17 17:36:09,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:36:09,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-17 17:36:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:09,394 INFO L225 Difference]: With dead ends: 67 [2022-10-17 17:36:09,394 INFO L226 Difference]: Without dead ends: 43 [2022-10-17 17:36:09,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:36:09,396 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 10 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:09,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 89 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:36:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-17 17:36:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2022-10-17 17:36:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-10-17 17:36:09,404 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 11 [2022-10-17 17:36:09,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:09,404 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-10-17 17:36:09,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-10-17 17:36:09,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:36:09,406 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:09,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:09,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:36:09,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:36:09,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:09,407 INFO L85 PathProgramCache]: Analyzing trace with hash -207114599, now seen corresponding path program 1 times [2022-10-17 17:36:09,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:09,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862689359] [2022-10-17 17:36:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:09,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:11,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:11,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862689359] [2022-10-17 17:36:11,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862689359] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:11,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:11,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:36:11,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077045937] [2022-10-17 17:36:11,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:11,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:36:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:11,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:36:11,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:36:11,855 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:12,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:12,082 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2022-10-17 17:36:12,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:36:12,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-17 17:36:12,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:12,084 INFO L225 Difference]: With dead ends: 49 [2022-10-17 17:36:12,084 INFO L226 Difference]: Without dead ends: 47 [2022-10-17 17:36:12,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:36:12,086 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:12,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 104 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:36:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-17 17:36:12,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-10-17 17:36:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-10-17 17:36:12,098 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 15 [2022-10-17 17:36:12,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:12,099 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-10-17 17:36:12,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-10-17 17:36:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:36:12,101 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:12,101 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:12,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 17:36:12,101 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:36:12,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:12,102 INFO L85 PathProgramCache]: Analyzing trace with hash -542473854, now seen corresponding path program 1 times [2022-10-17 17:36:12,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:12,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294422205] [2022-10-17 17:36:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:12,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:13,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:13,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294422205] [2022-10-17 17:36:13,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294422205] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:13,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446338602] [2022-10-17 17:36:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:13,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:13,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:13,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:13,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4506b19-add2-4bee-942a-634f22d1d733/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:36:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:14,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-17 17:36:14,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:14,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:36:14,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:36:14,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:14,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2022-10-17 17:36:14,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:14,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:14,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:14,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-17 17:36:14,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 18 treesize of output 18 [2022-10-17 17:36:14,365 INFO L390 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 50 treesize of output 30 [2022-10-17 17:36:14,372 INFO L390 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 18 treesize of output 16 [2022-10-17 17:36:14,404 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:36:14,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-17 17:36:14,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:14,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:14,601 INFO L356 Elim1Store]: treesize reduction 137, result has 7.4 percent of original size [2022-10-17 17:36:14,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 38 [2022-10-17 17:36:14,635 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-10-17 17:36:14,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-10-17 17:36:14,691 INFO L390 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 [2022-10-17 17:36:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:14,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:14,749 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:36:14,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-10-17 17:36:14,759 INFO L390 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 71 treesize of output 51 [2022-10-17 17:36:14,769 INFO L390 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 24 treesize of output 22 [2022-10-17 17:36:15,342 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:36:15,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 192 [2022-10-17 17:36:15,355 INFO L390 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 403 treesize of output 307 [2022-10-17 17:36:15,371 INFO L390 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 268 treesize of output 256 [2022-10-17 17:36:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:18,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446338602] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:18,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1949590889] [2022-10-17 17:36:18,508 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-10-17 17:36:18,508 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:18,513 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:18,520 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:18,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:18,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-10-17 17:36:18,636 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:36:18,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-10-17 17:36:18,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 17 treesize of output 22 [2022-10-17 17:36:18,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2022-10-17 17:36:18,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 30 [2022-10-17 17:36:18,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-10-17 17:36:18,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:18,840 INFO L356 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-10-17 17:36:18,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 33 [2022-10-17 17:36:18,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:18,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 33 [2022-10-17 17:36:18,965 INFO L356 Elim1Store]: treesize reduction 78, result has 33.9 percent of original size [2022-10-17 17:36:18,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 69 [2022-10-17 17:36:18,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-10-17 17:36:19,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 40 [2022-10-17 17:36:19,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-10-17 17:36:19,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:19,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:19,322 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-10-17 17:36:19,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 354 treesize of output 337 [2022-10-17 17:36:19,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:19,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:19,503 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-10-17 17:36:19,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 409 treesize of output 326 [2022-10-17 17:36:19,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:19,581 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-10-17 17:36:19,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 326 treesize of output 309 [2022-10-17 17:36:19,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:19,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:19,689 INFO L356 Elim1Store]: treesize reduction 60, result has 27.7 percent of original size [2022-10-17 17:36:19,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 324 treesize of output 318 [2022-10-17 17:36:19,899 INFO L356 Elim1Store]: treesize reduction 136, result has 17.6 percent of original size [2022-10-17 17:36:19,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 322 treesize of output 334 [2022-10-17 17:36:19,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:19,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:19,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:19,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:20,031 INFO L356 Elim1Store]: treesize reduction 266, result has 13.6 percent of original size [2022-10-17 17:36:20,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 case distinctions, treesize of input 368 treesize of output 331 [2022-10-17 17:36:20,110 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-10-17 17:36:20,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 329 treesize of output 334 [2022-10-17 17:36:20,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 18 [2022-10-17 17:36:20,396 INFO L390 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:36:20,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:36:20,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:20,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,457 INFO L356 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2022-10-17 17:36:20,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 22 [2022-10-17 17:36:20,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2022-10-17 17:36:20,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:36:20,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 18 [2022-10-17 17:36:20,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:20,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,638 INFO L356 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2022-10-17 17:36:20,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 22 [2022-10-17 17:36:20,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2022-10-17 17:36:20,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:36:20,674 INFO L390 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:36:20,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:36:20,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:20,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,810 INFO L356 Elim1Store]: treesize reduction 49, result has 21.0 percent of original size [2022-10-17 17:36:20,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 240 treesize of output 163 [2022-10-17 17:36:20,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:20,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:20,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,877 INFO L356 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2022-10-17 17:36:20,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 72 treesize of output 51 [2022-10-17 17:36:20,902 INFO L390 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:36:20,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:36:20,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:36:20,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:36:20,953 INFO L356 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-10-17 17:36:20,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 55 [2022-10-17 17:36:21,412 INFO L180 IcfgInterpreter]: Interpretation finished