./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 --- 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-8393723 [2022-11-19 08:31:31,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:31:31,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:31:31,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:31:31,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:31:31,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:31:31,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:31:31,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:31:31,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:31:31,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:31:31,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:31:31,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:31:31,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:31:31,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:31:31,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:31:31,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:31:31,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:31:31,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:31:31,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:31:31,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:31:31,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:31:31,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:31:31,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:31:31,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:31:31,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:31:31,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:31:31,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:31:31,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:31:31,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:31:31,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:31:31,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:31:31,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:31:31,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:31:31,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:31:31,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:31:31,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:31:31,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:31:31,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:31:31,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:31:31,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:31:31,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:31:31,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 08:31:31,891 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:31:31,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:31:31,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:31:31,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:31:31,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:31:31,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:31:31,900 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:31:31,900 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:31:31,900 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:31:31,900 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:31:31,902 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:31:31,902 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:31:31,902 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:31:31,902 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:31:31,903 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:31:31,903 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:31:31,903 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:31:31,903 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:31:31,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 08:31:31,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 08:31:31,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:31:31,905 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:31:31,905 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:31:31,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:31:31,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:31:31,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:31:31,906 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 08:31:31,906 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 08:31:31,907 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 08:31:31,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:31:31,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:31:31,908 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:31:31,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:31:31,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:31:31,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:31:31,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:31:31,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:31:31,909 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:31:31,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:31:31,910 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:31:31,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:31:31,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:31:31,911 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_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 [2022-11-19 08:31:32,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:31:32,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:31:32,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:31:32,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:31:32,212 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:31:32,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2022-11-19 08:31:32,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/data/c09a099cb/00e11d290d3a4a16ab8ac5ea4fececb8/FLAG846a45fb2 [2022-11-19 08:31:32,894 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:31:32,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2022-11-19 08:31:32,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/data/c09a099cb/00e11d290d3a4a16ab8ac5ea4fececb8/FLAG846a45fb2 [2022-11-19 08:31:33,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/data/c09a099cb/00e11d290d3a4a16ab8ac5ea4fececb8 [2022-11-19 08:31:33,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:31:33,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:31:33,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:31:33,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:31:33,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:31:33,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@276e2a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33, skipping insertion in model container [2022-11-19 08:31:33,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:31:33,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:31:33,632 WARN L234 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_bca2ada3-4c61-49ed-8659-87a06e5a8df0/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2022-11-19 08:31:33,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:31:33,645 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:31:33,717 WARN L234 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_bca2ada3-4c61-49ed-8659-87a06e5a8df0/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2022-11-19 08:31:33,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:31:33,745 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:31:33,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33 WrapperNode [2022-11-19 08:31:33,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:31:33,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:31:33,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:31:33,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:31:33,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,816 INFO L138 Inliner]: procedures = 127, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2022-11-19 08:31:33,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:31:33,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:31:33,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:31:33,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:31:33,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,851 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:31:33,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:31:33,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:31:33,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:31:33,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (1/1) ... [2022-11-19 08:31:33,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:31:33,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:31:33,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:31:33,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:31:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-19 08:31:33,940 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-19 08:31:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:31:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:31:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:31:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:31:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:31:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:31:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:31:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:31:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:31:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:31:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:31:33,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:31:34,061 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:31:34,063 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:31:34,096 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-19 08:31:34,639 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:31:34,758 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:31:34,759 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-19 08:31:34,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:31:34 BoogieIcfgContainer [2022-11-19 08:31:34,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:31:34,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:31:34,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:31:34,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:31:34,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:31:33" (1/3) ... [2022-11-19 08:31:34,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eec9a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:31:34, skipping insertion in model container [2022-11-19 08:31:34,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:31:33" (2/3) ... [2022-11-19 08:31:34,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eec9a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:31:34, skipping insertion in model container [2022-11-19 08:31:34,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:31:34" (3/3) ... [2022-11-19 08:31:34,777 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_insert_unequal.i [2022-11-19 08:31:34,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:31:34,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2022-11-19 08:31:34,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:31:34,875 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3dad1ef7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:31:34,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-19 08:31:34,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 115 states have internal predecessors, (129), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:34,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:31:34,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:34,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:31:34,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:31:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash 8357563, now seen corresponding path program 1 times [2022-11-19 08:31:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:34,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261747266] [2022-11-19 08:31:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:34,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:35,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:35,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261747266] [2022-11-19 08:31:35,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261747266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:35,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:35,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:31:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776317597] [2022-11-19 08:31:35,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:35,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:35,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:35,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:35,270 INFO L87 Difference]: Start difference. First operand has 117 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 115 states have internal predecessors, (129), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:35,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:35,600 INFO L93 Difference]: Finished difference Result 209 states and 234 transitions. [2022-11-19 08:31:35,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:35,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-19 08:31:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:35,618 INFO L225 Difference]: With dead ends: 209 [2022-11-19 08:31:35,618 INFO L226 Difference]: Without dead ends: 203 [2022-11-19 08:31:35,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:35,624 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 115 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:35,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 202 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:31:35,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-19 08:31:35,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 109. [2022-11-19 08:31:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 51 states have (on average 2.3529411764705883) internal successors, (120), 108 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:35,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2022-11-19 08:31:35,666 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 4 [2022-11-19 08:31:35,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:35,667 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2022-11-19 08:31:35,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2022-11-19 08:31:35,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:31:35,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:35,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:31:35,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:31:35,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:31:35,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash 8357564, now seen corresponding path program 1 times [2022-11-19 08:31:35,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:35,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412601972] [2022-11-19 08:31:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:35,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:35,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412601972] [2022-11-19 08:31:35,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412601972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:35,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:35,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:31:35,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967041541] [2022-11-19 08:31:35,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:35,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:35,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:35,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:35,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:35,763 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:36,051 INFO L93 Difference]: Finished difference Result 202 states and 223 transitions. [2022-11-19 08:31:36,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:36,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-19 08:31:36,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:36,053 INFO L225 Difference]: With dead ends: 202 [2022-11-19 08:31:36,053 INFO L226 Difference]: Without dead ends: 202 [2022-11-19 08:31:36,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:36,055 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 113 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:36,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 197 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:31:36,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-19 08:31:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 106. [2022-11-19 08:31:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 51 states have (on average 2.2941176470588234) internal successors, (117), 105 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2022-11-19 08:31:36,064 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 4 [2022-11-19 08:31:36,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:36,064 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2022-11-19 08:31:36,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,065 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2022-11-19 08:31:36,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:31:36,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:36,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:31:36,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:31:36,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:31:36,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:36,066 INFO L85 PathProgramCache]: Analyzing trace with hash 8595954, now seen corresponding path program 1 times [2022-11-19 08:31:36,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:36,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957027453] [2022-11-19 08:31:36,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:36,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:36,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:36,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957027453] [2022-11-19 08:31:36,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957027453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:36,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:36,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:31:36,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976249357] [2022-11-19 08:31:36,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:36,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:36,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:36,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:36,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:36,166 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:36,217 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2022-11-19 08:31:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:36,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-19 08:31:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:36,219 INFO L225 Difference]: With dead ends: 116 [2022-11-19 08:31:36,219 INFO L226 Difference]: Without dead ends: 116 [2022-11-19 08:31:36,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:36,221 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 10 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:36,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 194 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:31:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-19 08:31:36,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2022-11-19 08:31:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 52 states have (on average 2.269230769230769) internal successors, (118), 106 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2022-11-19 08:31:36,228 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 4 [2022-11-19 08:31:36,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:36,228 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2022-11-19 08:31:36,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2022-11-19 08:31:36,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:31:36,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:36,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:36,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:31:36,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:31:36,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:36,230 INFO L85 PathProgramCache]: Analyzing trace with hash 328619199, now seen corresponding path program 1 times [2022-11-19 08:31:36,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:36,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75940288] [2022-11-19 08:31:36,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:36,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:36,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:36,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75940288] [2022-11-19 08:31:36,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75940288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:36,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:36,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:31:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747426902] [2022-11-19 08:31:36,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:36,292 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:36,342 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2022-11-19 08:31:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:36,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 08:31:36,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:36,343 INFO L225 Difference]: With dead ends: 113 [2022-11-19 08:31:36,343 INFO L226 Difference]: Without dead ends: 113 [2022-11-19 08:31:36,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:36,355 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 1 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:36,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 191 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:31:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-19 08:31:36,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2022-11-19 08:31:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 57 states have (on average 2.1578947368421053) internal successors, (123), 111 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2022-11-19 08:31:36,365 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 8 [2022-11-19 08:31:36,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:36,365 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2022-11-19 08:31:36,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,365 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2022-11-19 08:31:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:31:36,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:36,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:36,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:31:36,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:31:36,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:36,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1669110859, now seen corresponding path program 1 times [2022-11-19 08:31:36,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:36,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854208252] [2022-11-19 08:31:36,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:36,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:31:36,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:36,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854208252] [2022-11-19 08:31:36,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854208252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:36,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:36,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:31:36,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814992394] [2022-11-19 08:31:36,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:36,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:36,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:36,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:36,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:36,456 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:36,553 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2022-11-19 08:31:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:36,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 08:31:36,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:36,556 INFO L225 Difference]: With dead ends: 119 [2022-11-19 08:31:36,556 INFO L226 Difference]: Without dead ends: 119 [2022-11-19 08:31:36,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:36,565 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 97 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:36,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 68 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:31:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-19 08:31:36,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2022-11-19 08:31:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 108 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2022-11-19 08:31:36,575 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 11 [2022-11-19 08:31:36,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:36,576 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2022-11-19 08:31:36,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:36,576 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2022-11-19 08:31:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:31:36,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:36,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:36,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:31:36,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:31:36,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:36,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1669110860, now seen corresponding path program 1 times [2022-11-19 08:31:36,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:36,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025586724] [2022-11-19 08:31:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:36,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:36,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:36,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025586724] [2022-11-19 08:31:36,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025586724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:31:36,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214704440] [2022-11-19 08:31:36,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:36,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:31:36,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:31:36,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:31:36,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:31:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:36,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:31:36,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:31:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:37,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:31:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:37,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214704440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:31:37,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1741709069] [2022-11-19 08:31:37,052 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-19 08:31:37,052 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:31:37,057 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:31:37,063 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:31:37,063 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:31:37,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,171 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:37,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,229 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 30 [2022-11-19 08:31:37,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 08:31:37,357 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:37,380 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:37,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,428 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:31:37,450 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:37,464 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:37,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:31:37,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:31:37,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,576 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:31:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-19 08:31:37,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,807 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:31:37,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,845 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:31:37,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,867 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:31:37,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,925 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:31:37,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,954 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:31:37,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:37,978 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:31:38,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,169 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 08:31:38,170 INFO L350 Elim1Store]: Elim1 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 5 case distinctions, treesize of input 395 treesize of output 376 [2022-11-19 08:31:38,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,220 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-19 08:31:38,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-19 08:31:38,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,270 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-19 08:31:38,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-19 08:31:38,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-19 08:31:38,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,541 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:31:38,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,569 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:31:38,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,591 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:31:38,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,659 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:31:38,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,686 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:31:38,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,714 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:31:38,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,859 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-19 08:31:38,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-19 08:31:38,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,903 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 08:31:38,903 INFO L350 Elim1Store]: Elim1 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 5 case distinctions, treesize of input 395 treesize of output 376 [2022-11-19 08:31:38,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:38,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:38,946 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-19 08:31:38,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-19 08:31:39,373 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-19 08:31:39,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 313 treesize of output 320 [2022-11-19 08:31:39,754 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-11-19 08:31:39,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 392 treesize of output 389 [2022-11-19 08:31:39,801 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-19 08:31:39,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 396 treesize of output 387 [2022-11-19 08:31:39,842 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-19 08:31:39,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 396 treesize of output 387 [2022-11-19 08:31:39,932 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:31:43,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1741709069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:43,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:31:43,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 10 [2022-11-19 08:31:43,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383821312] [2022-11-19 08:31:43,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:43,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:31:43,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:43,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:31:43,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:31:43,221 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:44,241 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2022-11-19 08:31:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:31:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 08:31:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:44,243 INFO L225 Difference]: With dead ends: 120 [2022-11-19 08:31:44,243 INFO L226 Difference]: Without dead ends: 120 [2022-11-19 08:31:44,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:31:44,244 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 12 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:44,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 178 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 08:31:44,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-19 08:31:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2022-11-19 08:31:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 64 states have (on average 2.0) internal successors, (128), 115 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:44,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2022-11-19 08:31:44,249 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 11 [2022-11-19 08:31:44,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:44,249 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2022-11-19 08:31:44,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:44,249 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2022-11-19 08:31:44,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 08:31:44,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:44,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 08:31:44,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:31:44,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:31:44,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:31:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:44,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1653804392, now seen corresponding path program 1 times [2022-11-19 08:31:44,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:44,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011400139] [2022-11-19 08:31:44,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:44,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:44,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:44,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011400139] [2022-11-19 08:31:44,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011400139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:31:44,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466401275] [2022-11-19 08:31:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:44,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:31:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:31:44,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:31:44,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:31:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:44,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 08:31:44,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:31:44,707 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:44,735 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:31:44,735 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:44,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:31:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:44,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466401275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:31:44,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1488393880] [2022-11-19 08:31:44,836 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-19 08:31:44,836 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:31:44,836 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:31:44,837 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:31:44,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:31:44,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:44,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:44,855 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:44,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:44,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:44,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:44,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:44,886 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 30 [2022-11-19 08:31:44,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:44,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 08:31:44,947 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:44,960 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:44,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:44,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:44,988 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:31:45,002 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:45,011 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:45,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:31:45,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,053 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:31:45,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:31:45,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-19 08:31:45,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,168 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 21 [2022-11-19 08:31:45,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,191 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:31:45,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,213 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 21 [2022-11-19 08:31:45,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,245 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:45,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,268 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:31:45,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,285 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:45,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:45,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:45,399 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 08:31:45,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-19 08:31:45,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:45,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:45,452 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 08:31:45,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-19 08:31:45,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:45,490 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 08:31:45,491 INFO L350 Elim1Store]: Elim1 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 5 case distinctions, treesize of input 387 treesize of output 368 [2022-11-19 08:31:45,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-19 08:31:45,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,674 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 21 [2022-11-19 08:31:45,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,692 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 21 [2022-11-19 08:31:45,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,712 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:31:45,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,749 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:45,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,772 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:31:45,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,790 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:45,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:45,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:45,892 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 08:31:45,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-19 08:31:45,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:45,931 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 08:31:45,931 INFO L350 Elim1Store]: Elim1 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 5 case distinctions, treesize of input 387 treesize of output 368 [2022-11-19 08:31:45,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:45,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:45,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:45,963 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 08:31:45,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-19 08:31:46,279 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-19 08:31:46,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 310 treesize of output 317 [2022-11-19 08:31:46,554 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:31:46,555 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 396 treesize of output 387 [2022-11-19 08:31:46,596 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-19 08:31:46,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 392 treesize of output 389 [2022-11-19 08:31:46,619 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:31:46,619 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 396 treesize of output 387 [2022-11-19 08:31:46,684 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:31:50,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1488393880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:50,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:31:50,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2022-11-19 08:31:50,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124786217] [2022-11-19 08:31:50,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:50,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 08:31:50,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:50,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 08:31:50,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-19 08:31:50,037 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:51,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:51,183 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2022-11-19 08:31:51,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 08:31:51,184 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 08:31:51,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:51,185 INFO L225 Difference]: With dead ends: 118 [2022-11-19 08:31:51,185 INFO L226 Difference]: Without dead ends: 118 [2022-11-19 08:31:51,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:31:51,186 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 12 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:51,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 197 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 08:31:51,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-19 08:31:51,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2022-11-19 08:31:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 65 states have (on average 1.9846153846153847) internal successors, (129), 116 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:51,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2022-11-19 08:31:51,191 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 15 [2022-11-19 08:31:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:51,191 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2022-11-19 08:31:51,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:51,191 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2022-11-19 08:31:51,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 08:31:51,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:51,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:51,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:31:51,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 08:31:51,400 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:31:51,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1644873912, now seen corresponding path program 1 times [2022-11-19 08:31:51,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:51,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760699728] [2022-11-19 08:31:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:51,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:31:51,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:51,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760699728] [2022-11-19 08:31:51,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760699728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:51,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:51,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:31:51,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88306236] [2022-11-19 08:31:51,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:51,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:51,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:51,537 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:51,619 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2022-11-19 08:31:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:51,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 08:31:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:51,620 INFO L225 Difference]: With dead ends: 114 [2022-11-19 08:31:51,620 INFO L226 Difference]: Without dead ends: 114 [2022-11-19 08:31:51,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:51,621 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 97 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:51,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 64 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:31:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-19 08:31:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-11-19 08:31:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 65 states have (on average 1.9384615384615385) internal successors, (126), 113 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2022-11-19 08:31:51,625 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 19 [2022-11-19 08:31:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:51,625 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2022-11-19 08:31:51,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2022-11-19 08:31:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 08:31:51,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:51,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:51,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:31:51,627 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:31:51,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1156837450, now seen corresponding path program 1 times [2022-11-19 08:31:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:51,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639362000] [2022-11-19 08:31:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:51,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:31:51,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:51,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639362000] [2022-11-19 08:31:51,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639362000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:31:51,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788625695] [2022-11-19 08:31:51,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:51,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:31:51,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:31:51,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:31:51,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:31:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:52,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 08:31:52,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:31:52,118 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:52,139 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 08:31:52,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-19 08:31:52,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,216 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-19 08:31:52,263 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 08:31:52,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-19 08:31:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:52,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:31:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:31:52,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788625695] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:31:52,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1995014329] [2022-11-19 08:31:52,593 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 08:31:52,593 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:31:52,593 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:31:52,593 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:31:52,593 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:31:52,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,614 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:52,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,647 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 30 [2022-11-19 08:31:52,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 08:31:52,690 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:52,702 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:52,726 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:52,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,739 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:31:52,753 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:52,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:31:52,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,791 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:31:52,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:31:52,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-19 08:31:52,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,938 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:31:52,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,953 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 21 [2022-11-19 08:31:52,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:52,974 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 21 [2022-11-19 08:31:53,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,008 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:53,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,024 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:53,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,046 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:31:53,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,105 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:31:53,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,128 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-19 08:31:53,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,146 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-19 08:31:53,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:53,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:31:53,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:53,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:31:53,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,248 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:31:53,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,571 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-19 08:31:53,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 51 [2022-11-19 08:31:53,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,646 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:31:53,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,668 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:31:53,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,688 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:31:53,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,724 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:31:53,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,747 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:31:53,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,767 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:31:53,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,812 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:31:53,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,831 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:31:53,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,858 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:31:53,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:31:53,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:31:53,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:53,979 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:31:54,038 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,045 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,060 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:31:54,071 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:54,081 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:54,093 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:31:54,112 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:31:54,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:31:54,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:31:54,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,175 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:31:54,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:54,204 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 08:31:54,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 08:31:54,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:54,230 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-19 08:31:54,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2022-11-19 08:31:54,314 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,323 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,341 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:54,349 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:31:54,357 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:54,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:31:54,378 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,388 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:31:54,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:31:54,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:31:54,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:54,456 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 08:31:54,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 08:31:54,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,477 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:31:54,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:54,501 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-19 08:31:54,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2022-11-19 08:31:54,599 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,609 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,660 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:31:54,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:31:54,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:31:54,736 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:31:54,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,764 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:31:54,764 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:31:54,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,788 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:31:54,788 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:31:54,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:54,852 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:31:54,853 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:31:54,869 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:31:54,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:54,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:54,907 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:31:54,908 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:31:54,958 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,967 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:54,985 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:54,991 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:31:55,002 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:31:55,069 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:55,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:55,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:55,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:55,088 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 08:31:55,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 216 [2022-11-19 08:31:55,118 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:31:55,179 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-19 08:31:55,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:55,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:31:55,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:31:55,203 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 08:31:55,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 216 [2022-11-19 08:31:55,252 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-19 08:31:55,288 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:31:58,888 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2453#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (= |ULTIMATE.start_main_~mid_index~0#1| (ite (and (not (= (mod |ULTIMATE.start_main_~len~0#1| 2) 0)) (< |ULTIMATE.start_main_~len~0#1| 0)) (+ (div |ULTIMATE.start_main_~len~0#1| 2) 1) (div |ULTIMATE.start_main_~len~0#1| 2))) (= |ULTIMATE.start_node_create_~data#1| |ULTIMATE.start_node_create_#in~data#1|) (= (select (select |#memory_int| |ULTIMATE.start_node_create_~temp~0#1.base|) |ULTIMATE.start_node_create_~temp~0#1.offset|) |ULTIMATE.start_node_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (= (select |#valid| |ULTIMATE.start_node_create_~temp~0#1.base|) 1) (= |ULTIMATE.start_main_~#s~0#1.offset| |ULTIMATE.start_dll_insert_#in~head#1.offset|) (= |ULTIMATE.start_node_create_#res#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (= |ULTIMATE.start_dll_insert_#in~data#1| |ULTIMATE.start_dll_insert_~data#1|) (= |ULTIMATE.start_node_create_~temp~0#1.offset| |ULTIMATE.start_node_create_#res#1.offset|) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| 0) (= |ULTIMATE.start_dll_insert_#in~index#1| |ULTIMATE.start_main_~mid_index~0#1|) (= 12 (select |#length| |ULTIMATE.start_node_create_~temp~0#1.base|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 4)) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 8)) 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= |ULTIMATE.start_main_~uneq~0#1| |ULTIMATE.start_dll_insert_#in~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_node_create_#res#1.base| |ULTIMATE.start_node_create_~temp~0#1.base|) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_dll_insert_#in~head#1.base| |ULTIMATE.start_dll_insert_~head#1.base|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_node_create_#in~data#1| |ULTIMATE.start_dll_insert_~data#1|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_node_create_#res#1.offset|) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (not (= (select |#valid| |ULTIMATE.start_dll_insert_~head#1.base|) 1)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 4)) 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (< |ULTIMATE.start_node_create_~temp~0#1.base| |#StackHeapBarrier|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 8)) 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= |ULTIMATE.start_dll_insert_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_insert_~index#1| |ULTIMATE.start_dll_insert_#in~index#1|) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (not (= |ULTIMATE.start_node_create_~temp~0#1.base| 0)) (= |ULTIMATE.start_dll_insert_~head#1.offset| |ULTIMATE.start_dll_insert_#in~head#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-19 08:31:58,889 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:31:58,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:31:58,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-19 08:31:58,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387498812] [2022-11-19 08:31:58,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:31:58,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 08:31:58,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:58,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 08:31:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-11-19 08:31:58,890 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:59,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:59,037 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2022-11-19 08:31:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:31:59,038 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 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 22 [2022-11-19 08:31:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:59,039 INFO L225 Difference]: With dead ends: 117 [2022-11-19 08:31:59,039 INFO L226 Difference]: Without dead ends: 117 [2022-11-19 08:31:59,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2022-11-19 08:31:59,040 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 658 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:59,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 79 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 112 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-11-19 08:31:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-19 08:31:59,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2022-11-19 08:31:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 65 states have (on average 1.8307692307692307) internal successors, (119), 106 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2022-11-19 08:31:59,043 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 22 [2022-11-19 08:31:59,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:59,043 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2022-11-19 08:31:59,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:31:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2022-11-19 08:31:59,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 08:31:59,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:59,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:59,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:31:59,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:31:59,245 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:31:59,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:59,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1156837451, now seen corresponding path program 1 times [2022-11-19 08:31:59,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:59,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598060808] [2022-11-19 08:31:59,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:59,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:31:59,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:59,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598060808] [2022-11-19 08:31:59,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598060808] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:31:59,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821391571] [2022-11-19 08:31:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:59,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:31:59,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:31:59,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:31:59,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:31:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:59,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 08:32:00,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:32:00,010 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:00,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:00,030 INFO L350 Elim1Store]: Elim1 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 14 [2022-11-19 08:32:00,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:00,070 INFO L350 Elim1Store]: Elim1 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 14 [2022-11-19 08:32:00,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:00,125 INFO L350 Elim1Store]: Elim1 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 14 [2022-11-19 08:32:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:32:00,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:32:00,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821391571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:00,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:32:00,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2022-11-19 08:32:00,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682561223] [2022-11-19 08:32:00,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:00,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:32:00,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:00,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:32:00,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:32:00,142 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:00,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:00,249 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2022-11-19 08:32:00,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:32:00,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-19 08:32:00,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:00,250 INFO L225 Difference]: With dead ends: 100 [2022-11-19 08:32:00,250 INFO L226 Difference]: Without dead ends: 100 [2022-11-19 08:32:00,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:32:00,251 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 164 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:00,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 51 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:32:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-19 08:32:00,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-19 08:32:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 99 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2022-11-19 08:32:00,254 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 22 [2022-11-19 08:32:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:00,254 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2022-11-19 08:32:00,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2022-11-19 08:32:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 08:32:00,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:00,255 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-11-19 08:32:00,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:32:00,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 08:32:00,456 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:00,456 INFO L85 PathProgramCache]: Analyzing trace with hash 385288452, now seen corresponding path program 1 times [2022-11-19 08:32:00,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:00,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700868290] [2022-11-19 08:32:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:32:00,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:00,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700868290] [2022-11-19 08:32:00,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700868290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:00,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:00,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:32:00,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734545644] [2022-11-19 08:32:00,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:00,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:32:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:00,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:32:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:32:00,572 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:00,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:00,604 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2022-11-19 08:32:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:32:00,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2022-11-19 08:32:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:00,605 INFO L225 Difference]: With dead ends: 94 [2022-11-19 08:32:00,605 INFO L226 Difference]: Without dead ends: 92 [2022-11-19 08:32:00,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:32:00,606 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 258 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:00,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 93 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:32:00,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-19 08:32:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-11-19 08:32:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 91 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2022-11-19 08:32:00,609 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 23 [2022-11-19 08:32:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:00,610 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2022-11-19 08:32:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2022-11-19 08:32:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 08:32:00,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:00,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:00,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:32:00,611 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash -675566594, now seen corresponding path program 1 times [2022-11-19 08:32:00,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:00,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520438585] [2022-11-19 08:32:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:00,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:32:00,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:00,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520438585] [2022-11-19 08:32:00,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520438585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:00,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:00,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 08:32:00,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744164670] [2022-11-19 08:32:00,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:00,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 08:32:00,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:00,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 08:32:00,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:32:00,979 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:01,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:01,292 INFO L93 Difference]: Finished difference Result 168 states and 188 transitions. [2022-11-19 08:32:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:32:01,292 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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 24 [2022-11-19 08:32:01,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:01,293 INFO L225 Difference]: With dead ends: 168 [2022-11-19 08:32:01,293 INFO L226 Difference]: Without dead ends: 168 [2022-11-19 08:32:01,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-11-19 08:32:01,294 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 477 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:01,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 130 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:32:01,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-19 08:32:01,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 100. [2022-11-19 08:32:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.791044776119403) internal successors, (120), 99 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:01,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2022-11-19 08:32:01,297 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 24 [2022-11-19 08:32:01,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:01,297 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2022-11-19 08:32:01,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:01,298 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2022-11-19 08:32:01,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 08:32:01,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:01,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:01,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 08:32:01,298 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:01,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:01,299 INFO L85 PathProgramCache]: Analyzing trace with hash -675566593, now seen corresponding path program 1 times [2022-11-19 08:32:01,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:01,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256225953] [2022-11-19 08:32:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:01,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:32:01,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:01,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256225953] [2022-11-19 08:32:01,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256225953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:01,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:01,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:32:01,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714330960] [2022-11-19 08:32:01,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:01,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:32:01,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:01,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:32:01,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:32:01,882 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:02,183 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2022-11-19 08:32:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:32:02,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 24 [2022-11-19 08:32:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:02,185 INFO L225 Difference]: With dead ends: 158 [2022-11-19 08:32:02,185 INFO L226 Difference]: Without dead ends: 158 [2022-11-19 08:32:02,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:32:02,186 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 438 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:02,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 107 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:32:02,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-19 08:32:02,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 100. [2022-11-19 08:32:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.7611940298507462) internal successors, (118), 99 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2022-11-19 08:32:02,189 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 24 [2022-11-19 08:32:02,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:02,189 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2022-11-19 08:32:02,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,189 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2022-11-19 08:32:02,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 08:32:02,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:02,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:02,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 08:32:02,190 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:02,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:02,190 INFO L85 PathProgramCache]: Analyzing trace with hash 532451152, now seen corresponding path program 1 times [2022-11-19 08:32:02,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:02,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067906306] [2022-11-19 08:32:02,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:02,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:32:02,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:02,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067906306] [2022-11-19 08:32:02,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067906306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:02,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:02,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:32:02,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358565305] [2022-11-19 08:32:02,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:02,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:32:02,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:02,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:32:02,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:32:02,247 INFO L87 Difference]: Start difference. First operand 100 states and 118 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:02,293 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2022-11-19 08:32:02,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:32:02,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-19 08:32:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:02,295 INFO L225 Difference]: With dead ends: 136 [2022-11-19 08:32:02,295 INFO L226 Difference]: Without dead ends: 136 [2022-11-19 08:32:02,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:32:02,296 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 59 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:02,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 138 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:32:02,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-19 08:32:02,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 95. [2022-11-19 08:32:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 94 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2022-11-19 08:32:02,299 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 25 [2022-11-19 08:32:02,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:02,300 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2022-11-19 08:32:02,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,300 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2022-11-19 08:32:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 08:32:02,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:02,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:02,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 08:32:02,301 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:02,302 INFO L85 PathProgramCache]: Analyzing trace with hash -679271128, now seen corresponding path program 1 times [2022-11-19 08:32:02,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:02,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941089095] [2022-11-19 08:32:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:32:02,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:02,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941089095] [2022-11-19 08:32:02,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941089095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:02,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:02,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:32:02,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012875507] [2022-11-19 08:32:02,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:02,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:32:02,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:02,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:32:02,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:32:02,468 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:02,518 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2022-11-19 08:32:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:32:02,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 26 [2022-11-19 08:32:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:02,519 INFO L225 Difference]: With dead ends: 92 [2022-11-19 08:32:02,519 INFO L226 Difference]: Without dead ends: 92 [2022-11-19 08:32:02,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:32:02,520 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 157 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:02,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 94 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:32:02,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-19 08:32:02,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-11-19 08:32:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.6557377049180328) internal successors, (101), 91 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2022-11-19 08:32:02,524 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 26 [2022-11-19 08:32:02,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:02,524 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2022-11-19 08:32:02,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2022-11-19 08:32:02,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 08:32:02,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:02,525 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:02,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 08:32:02,526 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:02,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash -673863548, now seen corresponding path program 1 times [2022-11-19 08:32:02,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:02,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199857740] [2022-11-19 08:32:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:02,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:32:02,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:02,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199857740] [2022-11-19 08:32:02,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199857740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:02,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:02,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:32:02,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856553007] [2022-11-19 08:32:02,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:02,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:32:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:32:02,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:32:02,636 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:02,739 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2022-11-19 08:32:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:32:02,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 26 [2022-11-19 08:32:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:02,740 INFO L225 Difference]: With dead ends: 99 [2022-11-19 08:32:02,741 INFO L226 Difference]: Without dead ends: 99 [2022-11-19 08:32:02,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:32:02,742 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 142 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:02,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 64 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:32:02,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-19 08:32:02,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2022-11-19 08:32:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 61 states have (on average 1.6065573770491803) internal successors, (98), 88 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2022-11-19 08:32:02,745 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 26 [2022-11-19 08:32:02,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:02,746 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2022-11-19 08:32:02,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2022-11-19 08:32:02,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 08:32:02,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:02,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:02,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 08:32:02,748 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash -673863547, now seen corresponding path program 1 times [2022-11-19 08:32:02,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:02,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805506406] [2022-11-19 08:32:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:02,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:32:02,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:02,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805506406] [2022-11-19 08:32:02,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805506406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:02,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:02,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:32:02,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867026912] [2022-11-19 08:32:02,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:02,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:32:02,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:02,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:32:02,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:32:02,858 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:02,902 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2022-11-19 08:32:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:32:02,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 26 [2022-11-19 08:32:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:02,903 INFO L225 Difference]: With dead ends: 88 [2022-11-19 08:32:02,903 INFO L226 Difference]: Without dead ends: 88 [2022-11-19 08:32:02,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:32:02,904 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 81 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:02,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 137 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:32:02,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-19 08:32:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-19 08:32:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.6) internal successors, (96), 87 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2022-11-19 08:32:02,907 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 26 [2022-11-19 08:32:02,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:02,908 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2022-11-19 08:32:02,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:02,908 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2022-11-19 08:32:02,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 08:32:02,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:02,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:02,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 08:32:02,909 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:02,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:02,910 INFO L85 PathProgramCache]: Analyzing trace with hash 417610598, now seen corresponding path program 1 times [2022-11-19 08:32:02,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:02,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969074157] [2022-11-19 08:32:02,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:02,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:32:02,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:02,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969074157] [2022-11-19 08:32:02,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969074157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:02,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:02,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:32:02,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285736735] [2022-11-19 08:32:02,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:02,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:32:02,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:02,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:32:02,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:32:02,980 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:03,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:03,123 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2022-11-19 08:32:03,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:32:03,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-19 08:32:03,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:03,124 INFO L225 Difference]: With dead ends: 136 [2022-11-19 08:32:03,125 INFO L226 Difference]: Without dead ends: 136 [2022-11-19 08:32:03,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:32:03,125 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 109 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:03,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 117 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:32:03,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-19 08:32:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 87. [2022-11-19 08:32:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.5833333333333333) internal successors, (95), 86 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2022-11-19 08:32:03,128 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 27 [2022-11-19 08:32:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:03,128 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2022-11-19 08:32:03,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2022-11-19 08:32:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 08:32:03,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:03,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:03,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-19 08:32:03,130 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:03,130 INFO L85 PathProgramCache]: Analyzing trace with hash 417610599, now seen corresponding path program 1 times [2022-11-19 08:32:03,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:03,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228102420] [2022-11-19 08:32:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:03,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:32:03,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:03,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228102420] [2022-11-19 08:32:03,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228102420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:03,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:03,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:32:03,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476999218] [2022-11-19 08:32:03,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:03,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:32:03,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:03,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:32:03,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:32:03,244 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:03,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:03,354 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2022-11-19 08:32:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:32:03,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-19 08:32:03,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:03,355 INFO L225 Difference]: With dead ends: 86 [2022-11-19 08:32:03,355 INFO L226 Difference]: Without dead ends: 86 [2022-11-19 08:32:03,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:32:03,356 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 68 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:03,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 86 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:32:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-19 08:32:03,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-19 08:32:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 85 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2022-11-19 08:32:03,359 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 27 [2022-11-19 08:32:03,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:03,359 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2022-11-19 08:32:03,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2022-11-19 08:32:03,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 08:32:03,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:03,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:03,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 08:32:03,360 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:03,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:03,360 INFO L85 PathProgramCache]: Analyzing trace with hash 61026715, now seen corresponding path program 1 times [2022-11-19 08:32:03,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:03,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517957004] [2022-11-19 08:32:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:03,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 08:32:03,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:03,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517957004] [2022-11-19 08:32:03,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517957004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:03,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:03,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:32:03,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597142655] [2022-11-19 08:32:03,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:03,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:32:03,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:03,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:32:03,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:32:03,529 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:03,620 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2022-11-19 08:32:03,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:32:03,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 28 [2022-11-19 08:32:03,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:03,621 INFO L225 Difference]: With dead ends: 83 [2022-11-19 08:32:03,621 INFO L226 Difference]: Without dead ends: 83 [2022-11-19 08:32:03,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:32:03,622 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 138 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:03,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 62 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:32:03,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-19 08:32:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-19 08:32:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 82 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2022-11-19 08:32:03,624 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 28 [2022-11-19 08:32:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:03,625 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2022-11-19 08:32:03,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2022-11-19 08:32:03,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 08:32:03,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:03,625 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:03,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-19 08:32:03,626 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:03,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:03,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1275737258, now seen corresponding path program 1 times [2022-11-19 08:32:03,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:03,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973277883] [2022-11-19 08:32:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:32:04,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:04,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973277883] [2022-11-19 08:32:04,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973277883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:32:04,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165450224] [2022-11-19 08:32:04,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:04,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:32:04,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:32:04,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:32:04,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:32:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:04,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-19 08:32:04,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:32:04,899 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:05,018 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:32:05,018 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:05,104 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:05,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:32:05,207 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 08:32:05,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-19 08:32:05,349 INFO L321 Elim1Store]: treesize reduction 72, result has 37.4 percent of original size [2022-11-19 08:32:05,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 57 [2022-11-19 08:32:05,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:05,429 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-11-19 08:32:05,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:05,443 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 08:32:05,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 55 [2022-11-19 08:32:05,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:05,468 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-11-19 08:32:05,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:05,487 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 08:32:05,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 55 [2022-11-19 08:32:05,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:05,518 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 08:32:05,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 55 [2022-11-19 08:32:05,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:05,536 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 08:32:05,603 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:05,690 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:05,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 29 [2022-11-19 08:32:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:32:05,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:32:06,080 INFO L350 Elim1Store]: Elim1 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 72 treesize of output 64 [2022-11-19 08:32:06,086 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 28 [2022-11-19 08:32:06,983 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:06,984 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 87 treesize of output 62 [2022-11-19 08:32:06,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:32:07,051 INFO L321 Elim1Store]: treesize reduction 23, result has 67.1 percent of original size [2022-11-19 08:32:07,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 530 treesize of output 478 [2022-11-19 08:32:07,078 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:07,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 449 treesize of output 417 [2022-11-19 08:32:07,092 INFO L350 Elim1Store]: Elim1 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 368 treesize of output 352 [2022-11-19 08:32:08,430 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:08,430 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 64 treesize of output 54 [2022-11-19 08:32:08,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:32:08,468 INFO L321 Elim1Store]: treesize reduction 19, result has 54.8 percent of original size [2022-11-19 08:32:08,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 216 [2022-11-19 08:32:08,486 INFO L350 Elim1Store]: Elim1 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 93 treesize of output 85 [2022-11-19 08:32:08,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:08,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 191 treesize of output 155 [2022-11-19 08:32:16,338 WARN L233 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 91 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:32:17,292 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 08:32:17,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 47 [2022-11-19 08:32:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:32:17,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165450224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:32:17,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1702318848] [2022-11-19 08:32:17,339 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-19 08:32:17,339 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:32:17,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:32:17,340 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:32:17,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:32:17,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,373 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:17,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,403 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 30 [2022-11-19 08:32:17,431 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:32:17,440 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:32:17,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 08:32:17,471 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:17,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,482 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:32:17,493 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:17,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:32:17,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:32:17,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,536 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:32:17,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-19 08:32:17,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,666 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:32:17,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,685 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:32:17,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,714 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:32:17,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,756 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:32:17,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,789 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:32:17,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,810 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:32:17,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,844 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:32:17,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,864 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:32:17,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,889 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:32:17,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:32:17,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:32:17,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:17,985 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:32:18,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-19 08:32:18,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,333 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:32:18,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,353 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:32:18,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,373 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:32:18,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,411 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:32:18,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,426 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:32:18,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,449 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:32:18,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,486 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:32:18,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,507 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:32:18,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,525 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:32:18,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,584 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:32:18,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:32:18,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:32:18,888 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:18,899 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:18,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:32:18,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:18,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:32:19,003 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:32:19,042 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:32:19,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:19,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:19,060 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:19,060 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:32:19,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:19,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:19,086 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:19,087 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:32:19,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:19,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:19,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:32:19,153 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:32:19,153 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:32:19,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:19,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:19,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:32:19,201 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:32:19,201 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:32:19,218 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:32:19,355 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:19,368 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:32:19,385 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:19,436 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-19 08:32:19,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:32:19,450 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:32:19,487 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-19 08:32:19,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-19 08:32:19,559 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-19 08:32:19,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 42 [2022-11-19 08:32:19,575 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:32:19,620 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-19 08:32:19,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-19 08:32:19,765 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:19,773 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:19,808 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:32:19,815 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:32:19,829 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:32:19,862 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:32:19,869 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:19,876 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:19,905 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-19 08:32:19,914 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-19 08:32:19,930 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:32:19,942 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:32:27,092 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5313#(and (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (not (= (select |#valid| |ULTIMATE.start_dll_insert_~last~0#1.base|) 1)) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|))' at error location [2022-11-19 08:32:27,092 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:32:27,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:32:27,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 37 [2022-11-19 08:32:27,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649215264] [2022-11-19 08:32:27,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:32:27,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-19 08:32:27,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:27,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-19 08:32:27,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=3131, Unknown=1, NotChecked=0, Total=3422 [2022-11-19 08:32:27,095 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 39 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 38 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:27,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:27,862 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2022-11-19 08:32:27,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 08:32:27,863 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 38 states have internal predecessors, (90), 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 31 [2022-11-19 08:32:27,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:27,864 INFO L225 Difference]: With dead ends: 82 [2022-11-19 08:32:27,864 INFO L226 Difference]: Without dead ends: 82 [2022-11-19 08:32:27,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=409, Invalid=3750, Unknown=1, NotChecked=0, Total=4160 [2022-11-19 08:32:27,865 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 87 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 407 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:27,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 575 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 498 Invalid, 0 Unknown, 407 Unchecked, 0.4s Time] [2022-11-19 08:32:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-19 08:32:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-11-19 08:32:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 60 states have (on average 1.5) internal successors, (90), 81 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2022-11-19 08:32:27,881 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 31 [2022-11-19 08:32:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:27,881 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2022-11-19 08:32:27,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 38 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:32:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2022-11-19 08:32:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 08:32:27,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:27,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:27,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-19 08:32:28,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:32:28,090 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:32:28,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1275737259, now seen corresponding path program 1 times [2022-11-19 08:32:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:28,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115378180] [2022-11-19 08:32:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:32:29,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:29,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115378180] [2022-11-19 08:32:29,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115378180] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:32:29,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548948360] [2022-11-19 08:32:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:29,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:32:29,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:32:29,801 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:32:29,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:32:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:30,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-19 08:32:30,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:32:30,078 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:30,207 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:32:30,208 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:30,293 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:30,305 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:32:30,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:32:30,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:32:30,516 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 08:32:30,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 62 [2022-11-19 08:32:30,524 INFO L350 Elim1Store]: Elim1 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 50 treesize of output 48 [2022-11-19 08:32:30,710 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-19 08:32:30,711 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 30 [2022-11-19 08:32:30,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:32:30,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:30,822 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 08:32:30,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 74 [2022-11-19 08:32:30,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:30,832 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-19 08:32:30,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2022-11-19 08:32:30,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:30,873 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 08:32:30,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 74 [2022-11-19 08:32:30,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:30,883 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-19 08:32:30,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2022-11-19 08:32:30,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:30,927 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-19 08:32:30,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2022-11-19 08:32:30,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:32:30,944 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 08:32:30,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 74 [2022-11-19 08:32:31,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:32:31,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:31,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 52 [2022-11-19 08:32:31,107 INFO L321 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2022-11-19 08:32:31,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 28 [2022-11-19 08:32:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:32:31,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:32:31,294 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1587 (Array Int Int)) (v_ArrVal_1586 (Array Int Int))) (<= 0 (+ 8 (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1587))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1586) |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|)) (+ (select (select .cse0 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) 4)))))) (forall ((v_ArrVal_1587 (Array Int Int)) (v_ArrVal_1586 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1587)) (.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1586))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|)) (.cse3 (+ (select (select .cse1 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) 4))) (<= (+ 12 (select (select .cse1 .cse2) .cse3)) (select |c_#length| (select (select .cse4 .cse2) .cse3))))))) is different from false [2022-11-19 08:32:35,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:35,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 250 treesize of output 254 [2022-11-19 08:32:37,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:37,071 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 82 [2022-11-19 08:32:37,085 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:37,085 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 67 [2022-11-19 08:32:37,235 INFO L321 Elim1Store]: treesize reduction 27, result has 85.5 percent of original size [2022-11-19 08:32:37,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 531 treesize of output 585 [2022-11-19 08:32:37,306 INFO L321 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2022-11-19 08:32:37,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 926 treesize of output 891 [2022-11-19 08:32:37,412 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:37,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 620 [2022-11-19 08:32:37,486 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:37,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 636 treesize of output 658 [2022-11-19 08:32:37,523 INFO L350 Elim1Store]: Elim1 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 373 treesize of output 341 [2022-11-19 08:32:37,555 INFO L350 Elim1Store]: Elim1 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 369 treesize of output 345 [2022-11-19 08:32:57,773 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:57,773 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 99 [2022-11-19 08:32:57,790 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:57,790 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 69 [2022-11-19 08:32:57,820 INFO L321 Elim1Store]: treesize reduction 3, result has 76.9 percent of original size [2022-11-19 08:32:57,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 340 treesize of output 332 [2022-11-19 08:32:59,024 INFO L321 Elim1Store]: treesize reduction 560, result has 41.3 percent of original size [2022-11-19 08:32:59,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 13 new quantified variables, introduced 65 case distinctions, treesize of input 9442 treesize of output 8593 [2022-11-19 08:32:59,287 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:59,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 8164 treesize of output 7154 [2022-11-19 08:32:59,616 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:32:59,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 7067 treesize of output 6805 [2022-11-19 08:32:59,899 INFO L350 Elim1Store]: Elim1 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 6693 treesize of output 6291 [2022-11-19 08:33:00,018 INFO L350 Elim1Store]: Elim1 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 6353 treesize of output 5881 [2022-11-19 08:33:39,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:33:39,097 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 99 [2022-11-19 08:33:39,116 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:33:39,116 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 69 [2022-11-19 08:33:39,141 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:33:39,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 340 treesize of output 335 [2022-11-19 08:33:40,353 INFO L321 Elim1Store]: treesize reduction 519, result has 45.6 percent of original size [2022-11-19 08:33:40,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 13 new quantified variables, introduced 65 case distinctions, treesize of input 9442 treesize of output 8634 [2022-11-19 08:33:40,581 INFO L350 Elim1Store]: Elim1 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 4911 treesize of output 4439 [2022-11-19 08:33:40,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:33:40,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 7729 treesize of output 6717 [2022-11-19 08:33:41,014 INFO L350 Elim1Store]: Elim1 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 6531 treesize of output 6129 [2022-11-19 08:33:41,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:33:41,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 6246 treesize of output 5982 [2022-11-19 08:33:54,510 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 08:33:54,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2022-11-19 08:33:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:33:54,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548948360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:33:54,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1003817782] [2022-11-19 08:33:54,561 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-19 08:33:54,561 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:33:54,562 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:33:54,562 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:33:54,562 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:33:54,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,590 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:54,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,613 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 30 [2022-11-19 08:33:54,636 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:33:54,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 08:33:54,658 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:33:54,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,678 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:33:54,691 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:54,699 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:54,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:33:54,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,731 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:33:54,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:33:54,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-19 08:33:54,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,845 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:33:54,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,864 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 21 [2022-11-19 08:33:54,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,882 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 21 [2022-11-19 08:33:54,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,911 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:54,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,928 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:54,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,956 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:33:54,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:54,994 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-19 08:33:55,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,013 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-19 08:33:55,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,046 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:33:55,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:33:55,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:33:55,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:33:55,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:33:55,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,138 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:33:55,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-19 08:33:55,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,467 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:33:55,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,482 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:33:55,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,500 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:33:55,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,532 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:33:55,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,565 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:33:55,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,588 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:33:55,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,623 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:33:55,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,642 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:33:55,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,659 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:33:55,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,710 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:33:55,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:33:55,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:55,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:33:55,977 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:55,991 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:56,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:56,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:33:56,080 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:33:56,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:56,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:33:56,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:56,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:56,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:33:56,140 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:33:56,159 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:33:56,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:56,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:56,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:33:56,183 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:33:56,217 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:33:56,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:56,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:56,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:33:56,256 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:33:56,256 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:33:56,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:56,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:33:56,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:33:56,293 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:33:56,293 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:33:56,442 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:56,453 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:33:56,462 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:56,520 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-19 08:33:56,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-19 08:33:56,540 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:33:56,569 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-19 08:33:56,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:33:56,623 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-19 08:33:56,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-19 08:33:56,643 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:33:56,682 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-19 08:33:56,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 42 [2022-11-19 08:33:56,795 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:56,802 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:56,830 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:33:56,838 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:33:56,853 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:33:56,886 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:33:56,895 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:56,909 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:33:56,929 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-19 08:33:56,939 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-19 08:33:56,948 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:33:56,968 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:34:04,410 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5728#(and (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (or (not (<= (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 12) (select |#length| |ULTIMATE.start_dll_insert_~last~0#1.base|))) (not (<= 0 (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)))) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|))' at error location [2022-11-19 08:34:04,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:34:04,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:34:04,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 36 [2022-11-19 08:34:04,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620491939] [2022-11-19 08:34:04,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:34:04,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-19 08:34:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-19 08:34:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=2921, Unknown=3, NotChecked=110, Total=3306 [2022-11-19 08:34:04,412 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:05,950 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2022-11-19 08:34:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 08:34:05,951 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 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 31 [2022-11-19 08:34:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:05,951 INFO L225 Difference]: With dead ends: 81 [2022-11-19 08:34:05,951 INFO L226 Difference]: Without dead ends: 81 [2022-11-19 08:34:05,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=446, Invalid=3845, Unknown=3, NotChecked=128, Total=4422 [2022-11-19 08:34:05,953 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 167 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 499 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:05,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 381 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 482 Invalid, 0 Unknown, 499 Unchecked, 0.4s Time] [2022-11-19 08:34:05,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-19 08:34:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-19 08:34:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 80 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2022-11-19 08:34:05,956 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 31 [2022-11-19 08:34:05,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:05,956 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2022-11-19 08:34:05,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:05,956 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2022-11-19 08:34:05,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-19 08:34:05,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:05,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:34:05,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:34:06,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:34:06,158 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:34:06,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:06,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2110620606, now seen corresponding path program 1 times [2022-11-19 08:34:06,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:06,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113396012] [2022-11-19 08:34:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:06,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:34:06,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:06,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113396012] [2022-11-19 08:34:06,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113396012] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:34:06,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391381177] [2022-11-19 08:34:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:06,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:34:06,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:34:06,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:34:06,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:34:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:06,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 08:34:06,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:34:06,736 INFO L350 Elim1Store]: Elim1 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 14 [2022-11-19 08:34:06,749 INFO L350 Elim1Store]: Elim1 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 14 [2022-11-19 08:34:06,797 INFO L350 Elim1Store]: Elim1 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 14 [2022-11-19 08:34:06,817 INFO L350 Elim1Store]: Elim1 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 14 [2022-11-19 08:34:06,859 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 08:34:06,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-19 08:34:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:34:06,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:34:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:34:07,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391381177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:34:07,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1992202527] [2022-11-19 08:34:07,018 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-19 08:34:07,018 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:34:07,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:34:07,019 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:34:07,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:34:07,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,040 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:07,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,071 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 30 [2022-11-19 08:34:07,094 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:07,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 08:34:07,116 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:07,137 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:07,147 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:07,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,159 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:34:07,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,184 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:34:07,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:07,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:07,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-19 08:34:07,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,343 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:07,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,364 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:34:07,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,382 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:07,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,424 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:07,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,442 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:07,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,457 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:07,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,500 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:07,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,516 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:07,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,538 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:07,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,617 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:07,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:07,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:07,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-19 08:34:07,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:07,993 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:08,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,011 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:34:08,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,027 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:08,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,071 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:08,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,086 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:08,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,107 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:08,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,148 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:08,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,167 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:08,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,184 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:08,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,242 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:08,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:08,547 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:08,559 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:08,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:34:08,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:34:08,643 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:08,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,691 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:34:08,691 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:34:08,712 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:08,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:34:08,733 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:34:08,770 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:34:08,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:08,813 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:34:08,813 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:34:08,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:08,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:08,850 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:34:08,851 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:34:09,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:09,007 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 17 [2022-11-19 08:34:09,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:09,021 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 17 [2022-11-19 08:34:09,033 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:09,084 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:09,090 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:09,107 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:34:09,113 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:09,122 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:09,187 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:09,194 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:09,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:09,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:09,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:09,228 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 08:34:09,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 216 [2022-11-19 08:34:09,281 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-19 08:34:09,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:09,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:09,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:09,301 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 08:34:09,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 216 [2022-11-19 08:34:09,330 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-19 08:34:09,369 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:34:15,677 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6130#(and (<= (+ |ULTIMATE.start_dll_insert_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_insert_~head#1.base|)) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) 0))) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (= (select |#valid| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|)) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) |ULTIMATE.start_dll_insert_#t~mem13#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (not (= (select |#valid| |ULTIMATE.start_dll_insert_#t~mem13#1.base|) 1)) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (= |ULTIMATE.start_dll_insert_#t~mem13#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|)) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= (select |#valid| |ULTIMATE.start_dll_insert_~head#1.base|) 1) (<= 5 |ULTIMATE.start_node_create_~data#1|) (= |#NULL.base| 0))' at error location [2022-11-19 08:34:15,677 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:34:15,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:34:15,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 13 [2022-11-19 08:34:15,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121515237] [2022-11-19 08:34:15,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:34:15,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 08:34:15,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:15,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 08:34:15,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 08:34:15,679 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:16,137 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2022-11-19 08:34:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 08:34:16,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 13 states have internal predecessors, (74), 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 32 [2022-11-19 08:34:16,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:16,138 INFO L225 Difference]: With dead ends: 113 [2022-11-19 08:34:16,138 INFO L226 Difference]: Without dead ends: 113 [2022-11-19 08:34:16,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=291, Invalid=1779, Unknown=0, NotChecked=0, Total=2070 [2022-11-19 08:34:16,140 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 355 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:16,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 162 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:34:16,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-19 08:34:16,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 72. [2022-11-19 08:34:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.471698113207547) internal successors, (78), 71 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2022-11-19 08:34:16,143 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 32 [2022-11-19 08:34:16,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:16,143 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2022-11-19 08:34:16,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2022-11-19 08:34:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 08:34:16,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:16,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:34:16,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:34:16,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-19 08:34:16,350 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:34:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:16,350 INFO L85 PathProgramCache]: Analyzing trace with hash -671063491, now seen corresponding path program 1 times [2022-11-19 08:34:16,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:16,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923344769] [2022-11-19 08:34:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:16,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:34:16,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:16,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923344769] [2022-11-19 08:34:16,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923344769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:34:16,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066802975] [2022-11-19 08:34:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:16,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:34:16,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:34:16,897 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:34:16,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 08:34:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:17,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-19 08:34:17,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:34:17,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:17,393 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-19 08:34:17,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:17,420 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-19 08:34:17,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:17,454 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-19 08:34:17,660 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 08:34:17,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-19 08:34:17,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:17,717 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-19 08:34:17,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:17,730 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-19 08:34:17,792 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 13 [2022-11-19 08:34:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:34:17,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:34:17,904 WARN L837 $PredicateComparison]: unable to prove that (and (not (<= |c_ULTIMATE.start_main_~mid_index~0#1| 0)) (forall ((v_ArrVal_1918 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_1918) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)))) is different from false [2022-11-19 08:34:18,255 INFO L350 Elim1Store]: Elim1 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 205 treesize of output 181 [2022-11-19 08:34:18,262 INFO L350 Elim1Store]: Elim1 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 176 treesize of output 166 [2022-11-19 08:34:18,267 INFO L350 Elim1Store]: Elim1 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 166 treesize of output 162 [2022-11-19 08:34:18,271 INFO L350 Elim1Store]: Elim1 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 162 treesize of output 154 [2022-11-19 08:34:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:34:18,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066802975] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:34:18,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [430454252] [2022-11-19 08:34:18,436 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-19 08:34:18,436 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:34:18,437 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:34:18,437 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:34:18,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:34:18,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,463 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:18,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,489 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 30 [2022-11-19 08:34:18,514 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:18,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 08:34:18,536 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:18,552 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:18,562 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:18,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,574 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:34:18,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:18,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:18,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,630 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:34:18,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-19 08:34:18,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,749 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:18,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,765 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:18,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,781 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:34:18,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,821 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:18,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,840 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:18,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,857 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:18,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,902 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:18,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,918 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:18,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,935 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:18,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:18,979 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:19,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:19,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:19,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-19 08:34:19,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,309 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:34:19,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,324 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:19,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,340 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:19,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,371 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:19,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,392 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:19,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,415 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:19,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,448 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:19,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,463 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:19,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,485 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:19,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:19,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:19,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,587 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:19,796 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:19,818 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:19,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:34:19,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:34:19,909 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:19,935 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:19,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,961 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:34:19,961 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:34:19,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:19,985 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:34:19,985 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:34:20,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:20,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:20,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:20,048 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:34:20,048 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:34:20,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:20,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:20,068 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:20,087 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:34:20,087 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:34:20,113 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:34:20,253 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:20,264 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:20,275 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:20,302 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:20,341 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-19 08:34:20,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-19 08:34:20,372 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-19 08:34:20,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:20,445 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-19 08:34:20,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 42 [2022-11-19 08:34:20,486 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-19 08:34:20,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-19 08:34:20,516 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:20,801 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:20,807 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:20,823 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:20,829 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:34:20,850 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:20,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:20,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:20,877 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:20,884 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:20,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:20,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:20,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:20,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:20,970 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:34:31,190 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6589#(and (or (and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (<= |ULTIMATE.start_main_~ptr~0#1.base| 0) (<= 0 |ULTIMATE.start_main_~ptr~0#1.base|) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.base|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.base| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_main_~count~0#1| 0) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|) (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|)) (and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.base|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.base| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_main_~count~0#1| 0) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.offset|) (<= 0 |ULTIMATE.start_main_~mid_index~0#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_main_~mid_index~0#1| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|))) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)))' at error location [2022-11-19 08:34:31,190 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:34:31,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:34:31,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2022-11-19 08:34:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434881681] [2022-11-19 08:34:31,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:34:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-19 08:34:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:31,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-19 08:34:31,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2606, Unknown=17, NotChecked=104, Total=2970 [2022-11-19 08:34:31,194 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:32,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:32,633 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2022-11-19 08:34:32,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-19 08:34:32,634 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 32 states have internal predecessors, (101), 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 34 [2022-11-19 08:34:32,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:32,634 INFO L225 Difference]: With dead ends: 127 [2022-11-19 08:34:32,634 INFO L226 Difference]: Without dead ends: 127 [2022-11-19 08:34:32,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=454, Invalid=3955, Unknown=17, NotChecked=130, Total=4556 [2022-11-19 08:34:32,636 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 320 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 329 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:32,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 725 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 858 Invalid, 0 Unknown, 329 Unchecked, 0.6s Time] [2022-11-19 08:34:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-19 08:34:32,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 73. [2022-11-19 08:34:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 72 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2022-11-19 08:34:32,639 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 34 [2022-11-19 08:34:32,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:32,640 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2022-11-19 08:34:32,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2022-11-19 08:34:32,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 08:34:32,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:32,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:34:32,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-19 08:34:32,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-19 08:34:32,846 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:34:32,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash -671066915, now seen corresponding path program 1 times [2022-11-19 08:34:32,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:32,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550612628] [2022-11-19 08:34:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:32,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:34:33,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:33,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550612628] [2022-11-19 08:34:33,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550612628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:34:33,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415870847] [2022-11-19 08:34:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:33,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:34:33,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:34:33,679 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:34:33,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 08:34:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:33,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-19 08:34:33,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:34:34,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:34,194 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-11-19 08:34:34,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:34,204 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-19 08:34:34,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:34,224 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-11-19 08:34:34,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:34,233 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-19 08:34:34,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:34,250 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-11-19 08:34:34,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:34,258 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-19 08:34:34,498 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 08:34:34,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-19 08:34:34,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:34,505 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 29 [2022-11-19 08:34:34,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:34,559 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 31 [2022-11-19 08:34:34,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:34,565 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 29 [2022-11-19 08:34:34,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:34,581 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 31 [2022-11-19 08:34:34,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:34,587 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 29 [2022-11-19 08:34:34,646 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 20 [2022-11-19 08:34:34,649 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 14 [2022-11-19 08:34:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:34:34,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:34:34,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:34:34,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 56 [2022-11-19 08:34:35,175 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int)) (or (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| |c_ULTIMATE.start_dll_insert_~last~0#1.base|)) (forall ((v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_prenex_27) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_prenex_26) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))))) (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int)) (or (forall ((v_ArrVal_2101 (Array Int Int)) (v_ArrVal_2097 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_ArrVal_2097) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2101) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |c_ULTIMATE.start_dll_insert_~last~0#1.base|)) (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| |c_ULTIMATE.start_dll_insert_~last~0#1.base|)))) (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int)) (or (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| |c_ULTIMATE.start_dll_insert_~last~0#1.base|)) (forall ((v_ArrVal_2102 (Array Int Int)) (v_ArrVal_2098 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_ArrVal_2098) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2102) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (+ |c_ULTIMATE.start_dll_insert_~last~0#1.offset| 1)))))) is different from false [2022-11-19 08:34:35,211 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (and (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int)) (or (forall ((v_ArrVal_2101 (Array Int Int)) (v_ArrVal_2097 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_ArrVal_2097) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2101) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) .cse0)) (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| .cse0)))) (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int)) (or (forall ((v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_prenex_27) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_prenex_26) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| .cse0)))) (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int)) (or (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| .cse0)) (forall ((v_ArrVal_2102 (Array Int Int)) (v_ArrVal_2098 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_ArrVal_2098) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2102) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) 1))))))) is different from false [2022-11-19 08:34:35,251 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int) (v_ArrVal_2096 (Array Int Int)) (v_ArrVal_2095 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2095) |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (forall ((v_ArrVal_2102 (Array Int Int)) (v_ArrVal_2098 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2096))) (< (select (select (store (store .cse0 |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_ArrVal_2098) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2102) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (+ (select (select .cse0 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) 1)))))) (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int) (v_ArrVal_2095 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2095))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (or (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| .cse1)) (forall ((v_ArrVal_2101 (Array Int Int)) (v_ArrVal_2097 (Array Int Int))) (= .cse1 (select (select (store (store .cse2 |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_ArrVal_2097) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2101) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int) (v_ArrVal_2096 (Array Int Int)) (v_ArrVal_2095 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2095) |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (forall ((v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (<= 0 (+ (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2096) |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_prenex_27) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_prenex_26) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))))) is different from false [2022-11-19 08:34:35,379 INFO L350 Elim1Store]: Elim1 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 1451 treesize of output 1383 [2022-11-19 08:34:35,447 INFO L350 Elim1Store]: Elim1 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 1370 treesize of output 1354 [2022-11-19 08:34:35,466 INFO L350 Elim1Store]: Elim1 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 1354 treesize of output 1338 [2022-11-19 08:34:35,485 INFO L350 Elim1Store]: Elim1 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 1338 treesize of output 1306 [2022-11-19 08:34:35,504 INFO L350 Elim1Store]: Elim1 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 1306 treesize of output 1298 [2022-11-19 08:34:35,523 INFO L350 Elim1Store]: Elim1 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 1298 treesize of output 1282 [2022-11-19 08:34:35,545 INFO L350 Elim1Store]: Elim1 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 1839 treesize of output 1759 [2022-11-19 08:34:35,606 INFO L350 Elim1Store]: Elim1 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 1669 treesize of output 1605 [2022-11-19 08:34:35,628 INFO L350 Elim1Store]: Elim1 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 1605 treesize of output 1603 [2022-11-19 08:34:35,648 INFO L350 Elim1Store]: Elim1 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 1603 treesize of output 1601 [2022-11-19 08:34:35,674 INFO L350 Elim1Store]: Elim1 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 1601 treesize of output 1573 [2022-11-19 08:34:35,698 INFO L350 Elim1Store]: Elim1 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 1573 treesize of output 1559 [2022-11-19 08:34:35,720 INFO L350 Elim1Store]: Elim1 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 1559 treesize of output 1527 [2022-11-19 08:34:36,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 08:34:36,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415870847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:34:36,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [390555254] [2022-11-19 08:34:36,532 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-19 08:34:36,532 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:34:36,532 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:34:36,533 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:34:36,533 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:34:36,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,556 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:36,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,583 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 30 [2022-11-19 08:34:36,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 08:34:36,636 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:36,644 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:36,663 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:36,672 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:36,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,700 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:34:36,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:36,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:36,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,749 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:34:36,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-19 08:34:36,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,869 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:36,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,886 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:36,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,908 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:34:36,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,943 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:36,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,963 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:36,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:36,989 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:37,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,025 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,050 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:37,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,069 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:37,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,116 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:37,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:37,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:37,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-19 08:34:37,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,465 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:37,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,488 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:34:37,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,509 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:37,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,542 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:37,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,567 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:37,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,589 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:37,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,622 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:37,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,648 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:37,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,670 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:37,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:37,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:37,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:37,790 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:38,064 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:38,077 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:38,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:38,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:34:38,156 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:38,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:38,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:34:38,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:38,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:38,220 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:34:38,220 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:34:38,237 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:38,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:38,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:38,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:34:38,271 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:34:38,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:38,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:38,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:38,336 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:34:38,336 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:34:38,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:38,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:38,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:38,391 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:34:38,392 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:34:38,419 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:34:38,602 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:38,614 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:38,635 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:38,713 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-19 08:34:38,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-19 08:34:38,748 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-19 08:34:38,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:38,765 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:38,799 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:38,842 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-19 08:34:38,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 42 [2022-11-19 08:34:38,895 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-19 08:34:38,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-19 08:34:39,087 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:39,094 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:39,129 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:34:39,142 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:39,150 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:39,170 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:39,179 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:39,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:39,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:39,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:39,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:39,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:39,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:39,279 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:34:48,413 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7071#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (or (not (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 8) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|))) (not (<= 0 (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)))) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.base|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.base| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_main_~count~0#1| 0) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|))' at error location [2022-11-19 08:34:48,413 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:34:48,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:34:48,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 33 [2022-11-19 08:34:48,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167186990] [2022-11-19 08:34:48,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:34:48,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-19 08:34:48,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-19 08:34:48,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2626, Unknown=21, NotChecked=318, Total=3192 [2022-11-19 08:34:48,416 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 35 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:51,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:51,087 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2022-11-19 08:34:51,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 08:34:51,087 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 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 34 [2022-11-19 08:34:51,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:51,088 INFO L225 Difference]: With dead ends: 115 [2022-11-19 08:34:51,088 INFO L226 Difference]: Without dead ends: 115 [2022-11-19 08:34:51,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=419, Invalid=3476, Unknown=23, NotChecked=372, Total=4290 [2022-11-19 08:34:51,090 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 747 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 494 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:51,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 490 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 599 Invalid, 0 Unknown, 494 Unchecked, 0.6s Time] [2022-11-19 08:34:51,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-19 08:34:51,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 74. [2022-11-19 08:34:51,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 73 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2022-11-19 08:34:51,093 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 34 [2022-11-19 08:34:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:51,094 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2022-11-19 08:34:51,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2022-11-19 08:34:51,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 08:34:51,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:51,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:34:51,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 08:34:51,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-19 08:34:51,300 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:34:51,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash 492853347, now seen corresponding path program 1 times [2022-11-19 08:34:51,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:51,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710947061] [2022-11-19 08:34:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:51,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:34:52,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:52,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710947061] [2022-11-19 08:34:52,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710947061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:34:52,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979234116] [2022-11-19 08:34:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:52,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:34:52,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:34:52,967 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:34:52,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 08:34:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:53,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-19 08:34:53,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:34:53,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:53,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 08:34:53,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:53,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 08:34:53,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:53,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 08:34:53,960 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 08:34:53,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-19 08:34:54,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:54,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 08:34:54,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:54,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 08:34:54,095 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-19 08:34:54,095 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 31 treesize of output 36 [2022-11-19 08:34:54,206 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 13 [2022-11-19 08:34:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:34:54,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:34:54,414 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_dll_insert_~last~0#1.offset| Int) (|ULTIMATE.start_dll_insert_~last~0#1.base| Int) (v_ArrVal_2293 (Array Int Int))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2293))) (store .cse0 |ULTIMATE.start_dll_insert_~last~0#1.base| (store (select .cse0 |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0))) (not (<= |c_ULTIMATE.start_main_~mid_index~0#1| 0))) is different from false [2022-11-19 08:34:54,429 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2291 (Array Int Int)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| Int) (|ULTIMATE.start_dll_insert_~last~0#1.base| Int) (v_ArrVal_2293 (Array Int Int))) (not (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| v_ArrVal_2291) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2293))) (store .cse0 |ULTIMATE.start_dll_insert_~last~0#1.base| (store (select .cse0 |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0))) (not (<= |c_ULTIMATE.start_main_~mid_index~0#1| 0))) is different from false [2022-11-19 08:34:54,457 WARN L837 $PredicateComparison]: unable to prove that (or (and (not (<= |c_ULTIMATE.start_main_~mid_index~0#1| 0)) (forall ((v_ArrVal_2291 (Array Int Int)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| Int) (v_subst_1 Int) (v_ArrVal_2293 (Array Int Int))) (not (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~last~0#1.base| v_ArrVal_2291) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2293))) (store .cse0 v_subst_1 (store (select .cse0 v_subst_1) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)))) (not (< 0 |c_ULTIMATE.start_dll_insert_~index#1|))) is different from false [2022-11-19 08:34:54,469 WARN L837 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_2291 (Array Int Int)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| Int) (v_subst_1 Int) (v_ArrVal_2293 (Array Int Int))) (not (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) v_ArrVal_2291) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2293))) (store .cse0 v_subst_1 (store (select .cse0 v_subst_1) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0))) (not (<= |c_ULTIMATE.start_main_~mid_index~0#1| 0))) (not (< 0 |c_ULTIMATE.start_dll_insert_~index#1|))) is different from false [2022-11-19 08:34:54,483 WARN L837 $PredicateComparison]: unable to prove that (or (and (not (<= |c_ULTIMATE.start_main_~mid_index~0#1| 0)) (forall ((v_ArrVal_2291 (Array Int Int)) (v_ArrVal_2290 (Array Int Int)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| Int) (v_subst_1 Int) (v_ArrVal_2293 (Array Int Int))) (not (= (select (select (let ((.cse0 (store (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2290))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) v_ArrVal_2291)) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2293))) (store .cse0 v_subst_1 (store (select .cse0 v_subst_1) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8) |c_ULTIMATE.start_node_create_~temp~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)))) (not (< 0 |c_ULTIMATE.start_dll_insert_~index#1|))) is different from false [2022-11-19 08:34:54,573 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:34:54,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22823 treesize of output 22297 [2022-11-19 08:34:54,772 INFO L350 Elim1Store]: Elim1 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 23946 treesize of output 22134 [2022-11-19 08:34:54,993 INFO L350 Elim1Store]: Elim1 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 23798 treesize of output 22982 [2022-11-19 08:34:55,203 INFO L350 Elim1Store]: Elim1 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 25062 treesize of output 24462 [2022-11-19 08:34:56,418 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-19 08:34:56,443 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 22 [2022-11-19 08:34:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 08:34:56,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979234116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:34:56,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1467990576] [2022-11-19 08:34:56,644 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-19 08:34:56,644 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:34:56,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:34:56,645 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:34:56,645 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:34:56,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,668 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:56,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,695 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 30 [2022-11-19 08:34:56,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 08:34:56,734 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:56,745 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:56,764 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:56,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,779 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:34:56,792 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:56,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,819 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-19 08:34:56,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:56,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:56,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-19 08:34:56,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,952 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:34:56,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,969 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 21 [2022-11-19 08:34:56,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:56,987 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 21 [2022-11-19 08:34:57,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,023 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:57,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,038 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:57,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,069 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:57,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,108 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-19 08:34:57,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,128 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:57,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,144 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-19 08:34:57,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:57,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:34:57,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,227 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:57,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:57,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-19 08:34:57,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,526 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-19 08:34:57,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 51 [2022-11-19 08:34:57,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,595 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 38 [2022-11-19 08:34:57,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,616 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:57,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,638 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 25 [2022-11-19 08:34:57,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,684 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:57,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,711 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:57,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,733 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-19 08:34:57,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,769 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:57,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,793 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:57,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,815 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:34:57,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:57,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,896 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-19 08:34:57,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:57,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-19 08:34:57,968 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:57,977 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:57,991 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:57,999 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:58,008 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:34:58,019 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:58,028 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:58,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:58,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:58,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:58,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:58,098 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:58,109 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 08:34:58,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 08:34:58,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:58,135 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-19 08:34:58,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2022-11-19 08:34:58,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,149 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:58,204 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:58,210 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:58,226 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:58,233 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:34:58,243 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:58,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:58,266 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:58,274 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:58,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:58,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:58,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:58,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:58,364 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-19 08:34:58,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2022-11-19 08:34:58,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:58,390 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 08:34:58,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 08:34:58,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,407 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:58,511 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:58,529 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:58,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:34:58,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 08:34:58,611 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:58,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,657 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:34:58,657 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:34:58,672 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:58,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:34:58,694 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:34:58,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:58,758 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:34:58,759 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:34:58,786 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:34:58,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:58,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:58,822 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-19 08:34:58,822 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-19 08:34:58,959 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:58,975 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:58,986 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:59,030 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-19 08:34:59,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:59,069 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-19 08:34:59,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-19 08:34:59,093 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:59,162 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-19 08:34:59,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-19 08:34:59,212 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-19 08:34:59,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 42 [2022-11-19 08:34:59,234 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:59,369 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:59,382 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-19 08:34:59,395 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:59,654 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:59,661 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:59,677 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 7 [2022-11-19 08:34:59,684 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:59,692 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-11-19 08:34:59,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:59,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:59,715 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:59,723 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:59,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:59,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:34:59,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:34:59,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-19 08:34:59,808 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:35:09,434 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7543#(and (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (or (and (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_~mid_index~0#1|)) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 12) (select |#length| |ULTIMATE.start_dll_insert_~last~0#1.base|)) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= (select |#valid| |ULTIMATE.start_dll_insert_~last~0#1.base|) 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|))' at error location [2022-11-19 08:35:09,435 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:35:09,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:35:09,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 12] total 36 [2022-11-19 08:35:09,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706354378] [2022-11-19 08:35:09,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:35:09,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-19 08:35:09,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:09,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-19 08:35:09,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2751, Unknown=5, NotChecked=550, Total=3540 [2022-11-19 08:35:09,437 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 37 states, 37 states have (on average 2.810810810810811) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:35:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:13,212 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2022-11-19 08:35:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 08:35:13,213 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.810810810810811) internal successors, (104), 36 states have internal predecessors, (104), 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 35 [2022-11-19 08:35:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:13,214 INFO L225 Difference]: With dead ends: 144 [2022-11-19 08:35:13,214 INFO L226 Difference]: Without dead ends: 144 [2022-11-19 08:35:13,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1621 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=522, Invalid=5041, Unknown=7, NotChecked=750, Total=6320 [2022-11-19 08:35:13,216 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 737 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:13,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 300 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 660 Invalid, 0 Unknown, 513 Unchecked, 0.7s Time] [2022-11-19 08:35:13,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-19 08:35:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 75. [2022-11-19 08:35:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 74 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:35:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2022-11-19 08:35:13,220 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 35 [2022-11-19 08:35:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:13,220 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2022-11-19 08:35:13,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.810810810810811) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:35:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2022-11-19 08:35:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 08:35:13,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:13,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:13,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 08:35:13,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:35:13,429 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-19 08:35:13,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:13,429 INFO L85 PathProgramCache]: Analyzing trace with hash 492849922, now seen corresponding path program 1 times [2022-11-19 08:35:13,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:13,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223470043] [2022-11-19 08:35:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:13,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:35:14,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:14,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223470043] [2022-11-19 08:35:14,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223470043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:35:14,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938542514] [2022-11-19 08:35:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:14,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:35:14,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:35:14,460 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:35:14,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca2ada3-4c61-49ed-8659-87a06e5a8df0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 08:35:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:14,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-19 08:35:14,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:35:14,834 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:35:15,002 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-19 08:35:15,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-19 08:35:15,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:35:15,090 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-11-19 08:35:15,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:35:15,101 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-19 08:35:15,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:35:15,120 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-11-19 08:35:15,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:35:15,135 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-19 08:35:15,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:35:15,154 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-11-19 08:35:15,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:35:15,165 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-19 08:35:15,243 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:35:15,408 INFO L350 Elim1Store]: Elim1 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 37 treesize of output 27 [2022-11-19 08:35:15,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:35:15,459 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-19 08:35:15,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:35:15,519 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-19 08:35:15,562 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-19 08:35:15,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-19 08:35:15,685 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:35:15,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2022-11-19 08:35:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:35:15,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:35:16,561 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:35:16,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 225348 treesize of output 211526 [2022-11-19 08:35:18,175 INFO L350 Elim1Store]: Elim1 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 275148 treesize of output 265704 [2022-11-19 08:35:19,867 INFO L350 Elim1Store]: Elim1 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 265700 treesize of output 260980 [2022-11-19 08:35:20,828 INFO L350 Elim1Store]: Elim1 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 326580 treesize of output 314610 [2022-11-19 08:35:33,801 WARN L233 SmtUtils]: Spent 12.97s on a formula simplification. DAG size of input: 1162 DAG size of output: 1150 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 08:35:33,917 INFO L350 Elim1Store]: Elim1 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 292600 treesize of output 284952 [2022-11-19 08:35:49,463 WARN L233 SmtUtils]: Spent 15.54s on a formula simplification. DAG size of input: 1148 DAG size of output: 1146 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)