./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9 --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 4d5c55d9a4a2ded389ff7ce077afdc88fb2d2855921e5fd1e3b93fbba7e140e8 --- 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-6b4ec56 [2022-11-20 20:35:08,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:35:08,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:35:08,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:35:08,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:35:08,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:35:08,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:35:08,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:35:08,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:35:08,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:35:08,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:35:08,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:35:08,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:35:08,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:35:08,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:35:08,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:35:08,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:35:08,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:35:08,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:35:08,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:35:08,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:35:08,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:35:08,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:35:08,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:35:08,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:35:08,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:35:08,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:35:08,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:35:08,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:35:08,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:35:08,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:35:08,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:35:08,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:35:08,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:35:08,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:35:08,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:35:08,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:35:08,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:35:08,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:35:08,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:35:08,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:35:08,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-20 20:35:08,660 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:35:08,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:35:08,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:35:08,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:35:08,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:35:08,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:35:08,662 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:35:08,663 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:35:08,663 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:35:08,663 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:35:08,664 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:35:08,664 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:35:08,665 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:35:08,665 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:35:08,665 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:35:08,665 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:35:08,665 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:35:08,666 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:35:08,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 20:35:08,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 20:35:08,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:35:08,667 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:35:08,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 20:35:08,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:35:08,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:35:08,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:35:08,668 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 20:35:08,668 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 20:35:08,669 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 20:35:08,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:35:08,669 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:35:08,669 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:35:08,669 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:35:08,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:35:08,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:35:08,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:35:08,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:35:08,670 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:35:08,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:35:08,671 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:35:08,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:35:08,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:35:08,671 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_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5c55d9a4a2ded389ff7ce077afdc88fb2d2855921e5fd1e3b93fbba7e140e8 [2022-11-20 20:35:08,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:35:08,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:35:08,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:35:08,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:35:08,983 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:35:08,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i [2022-11-20 20:35:12,160 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:35:12,467 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:35:12,467 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i [2022-11-20 20:35:12,479 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/data/ed3e8efa4/59a09c41b7774b95ac25d934f93b899d/FLAGb9b024c42 [2022-11-20 20:35:12,500 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/data/ed3e8efa4/59a09c41b7774b95ac25d934f93b899d [2022-11-20 20:35:12,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:35:12,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:35:12,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:35:12,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:35:12,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:35:12,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:35:12" (1/1) ... [2022-11-20 20:35:12,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fad8e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:12, skipping insertion in model container [2022-11-20 20:35:12,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:35:12" (1/1) ... [2022-11-20 20:35:12,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:35:12,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:35:13,019 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i[24275,24288] [2022-11-20 20:35:13,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:35:13,032 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:35:13,070 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i[24275,24288] [2022-11-20 20:35:13,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:35:13,099 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:35:13,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13 WrapperNode [2022-11-20 20:35:13,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:35:13,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:35:13,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:35:13,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:35:13,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (1/1) ... [2022-11-20 20:35:13,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (1/1) ... [2022-11-20 20:35:13,177 INFO L138 Inliner]: procedures = 126, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2022-11-20 20:35:13,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:35:13,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:35:13,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:35:13,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:35:13,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (1/1) ... [2022-11-20 20:35:13,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (1/1) ... [2022-11-20 20:35:13,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (1/1) ... [2022-11-20 20:35:13,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (1/1) ... [2022-11-20 20:35:13,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (1/1) ... [2022-11-20 20:35:13,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (1/1) ... [2022-11-20 20:35:13,240 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (1/1) ... [2022-11-20 20:35:13,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (1/1) ... [2022-11-20 20:35:13,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:35:13,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:35:13,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:35:13,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:35:13,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (1/1) ... [2022-11-20 20:35:13,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:35:13,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:35:13,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:35:13,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:35:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-20 20:35:13,352 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-20 20:35:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:35:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:35:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:35:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:35:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:35:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:35:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:35:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:35:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:35:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:35:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:35:13,535 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:35:13,537 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:35:13,579 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-20 20:35:13,931 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:35:13,960 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:35:13,960 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 20:35:13,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:35:13 BoogieIcfgContainer [2022-11-20 20:35:13,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:35:13,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:35:13,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:35:13,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:35:13,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:35:12" (1/3) ... [2022-11-20 20:35:13,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c427f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:35:13, skipping insertion in model container [2022-11-20 20:35:13,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:35:13" (2/3) ... [2022-11-20 20:35:13,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c427f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:35:13, skipping insertion in model container [2022-11-20 20:35:13,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:35:13" (3/3) ... [2022-11-20 20:35:13,974 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all_reverse.i [2022-11-20 20:35:13,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:35:13,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-11-20 20:35:14,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:35:14,052 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;@2bca6cfa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:35:14,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-20 20:35:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 33 states have (on average 2.272727272727273) internal successors, (75), 67 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:35:14,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 20:35:14,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:14,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 20:35:14,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:14,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:14,072 INFO L85 PathProgramCache]: Analyzing trace with hash 5050762, now seen corresponding path program 1 times [2022-11-20 20:35:14,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:14,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048847019] [2022-11-20 20:35:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:14,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:14,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:14,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048847019] [2022-11-20 20:35:14,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048847019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:14,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:14,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:35:14,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170620745] [2022-11-20 20:35:14,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:14,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:35:14,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:14,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:35:14,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:35:14,455 INFO L87 Difference]: Start difference. First operand has 69 states, 33 states have (on average 2.272727272727273) internal successors, (75), 67 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 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) [2022-11-20 20:35:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:14,650 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2022-11-20 20:35:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:35:14,653 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 [2022-11-20 20:35:14,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:14,662 INFO L225 Difference]: With dead ends: 109 [2022-11-20 20:35:14,662 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 20:35:14,664 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 [2022-11-20 20:35:14,680 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 56 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:14,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 102 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:35:14,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 20:35:14,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2022-11-20 20:35:14,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 31 states have (on average 2.129032258064516) internal successors, (66), 61 states have internal predecessors, (66), 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) [2022-11-20 20:35:14,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2022-11-20 20:35:14,718 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 4 [2022-11-20 20:35:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:14,719 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2022-11-20 20:35:14,719 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) [2022-11-20 20:35:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2022-11-20 20:35:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 20:35:14,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:14,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 20:35:14,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:35:14,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:14,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:14,722 INFO L85 PathProgramCache]: Analyzing trace with hash 5050763, now seen corresponding path program 1 times [2022-11-20 20:35:14,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:14,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266788470] [2022-11-20 20:35:14,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:14,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:14,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:14,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266788470] [2022-11-20 20:35:14,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266788470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:14,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:14,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:35:14,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240089353] [2022-11-20 20:35:14,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:14,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:35:14,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:14,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:35:14,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:35:14,866 INFO L87 Difference]: Start difference. First operand 62 states and 66 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) [2022-11-20 20:35:15,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:15,018 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-20 20:35:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:35:15,019 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 [2022-11-20 20:35:15,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:15,021 INFO L225 Difference]: With dead ends: 108 [2022-11-20 20:35:15,021 INFO L226 Difference]: Without dead ends: 108 [2022-11-20 20:35:15,021 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 [2022-11-20 20:35:15,023 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 60 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:15,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 110 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:35:15,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-20 20:35:15,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 59. [2022-11-20 20:35:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 31 states have (on average 2.032258064516129) internal successors, (63), 58 states have internal predecessors, (63), 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) [2022-11-20 20:35:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-11-20 20:35:15,040 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 4 [2022-11-20 20:35:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:15,040 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-11-20 20:35:15,040 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) [2022-11-20 20:35:15,043 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-11-20 20:35:15,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 20:35:15,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:15,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 20:35:15,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:35:15,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:15,048 INFO L85 PathProgramCache]: Analyzing trace with hash 5174857, now seen corresponding path program 1 times [2022-11-20 20:35:15,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:15,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619215206] [2022-11-20 20:35:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:15,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:15,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:15,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619215206] [2022-11-20 20:35:15,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619215206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:15,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:15,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:35:15,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824063163] [2022-11-20 20:35:15,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:15,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:35:15,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:35:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:35:15,199 INFO L87 Difference]: Start difference. First operand 59 states and 63 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) [2022-11-20 20:35:15,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:15,229 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2022-11-20 20:35:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:35:15,230 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 [2022-11-20 20:35:15,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:15,231 INFO L225 Difference]: With dead ends: 69 [2022-11-20 20:35:15,231 INFO L226 Difference]: Without dead ends: 69 [2022-11-20 20:35:15,232 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 [2022-11-20 20:35:15,233 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 10 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:15,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 110 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:35:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-20 20:35:15,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2022-11-20 20:35:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 2.0) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:35:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2022-11-20 20:35:15,241 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 4 [2022-11-20 20:35:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:15,241 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2022-11-20 20:35:15,242 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) [2022-11-20 20:35:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2022-11-20 20:35:15,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:35:15,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:15,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:15,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:35:15,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:15,244 INFO L85 PathProgramCache]: Analyzing trace with hash 150200334, now seen corresponding path program 1 times [2022-11-20 20:35:15,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:15,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647243904] [2022-11-20 20:35:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:15,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:15,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:15,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647243904] [2022-11-20 20:35:15,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647243904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:15,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:15,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:35:15,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628835550] [2022-11-20 20:35:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:15,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:35:15,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:15,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:35:15,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:35:15,380 INFO L87 Difference]: Start difference. First operand 60 states and 64 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) [2022-11-20 20:35:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:15,436 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2022-11-20 20:35:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:35:15,443 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 [2022-11-20 20:35:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:15,444 INFO L225 Difference]: With dead ends: 66 [2022-11-20 20:35:15,444 INFO L226 Difference]: Without dead ends: 66 [2022-11-20 20:35:15,445 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 [2022-11-20 20:35:15,446 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:15,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 105 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:35:15,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-20 20:35:15,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2022-11-20 20:35:15,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.864864864864865) internal successors, (69), 64 states have internal predecessors, (69), 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) [2022-11-20 20:35:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2022-11-20 20:35:15,453 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2022-11-20 20:35:15,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:15,453 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2022-11-20 20:35:15,453 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) [2022-11-20 20:35:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-11-20 20:35:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:35:15,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:15,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:15,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:35:15,455 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:15,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash -732865500, now seen corresponding path program 1 times [2022-11-20 20:35:15,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:15,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901262278] [2022-11-20 20:35:15,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:15,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:15,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:15,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901262278] [2022-11-20 20:35:15,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901262278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:35:15,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544951306] [2022-11-20 20:35:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:15,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:35:15,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:35:15,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:35:15,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:35:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:15,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 20:35:15,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:35:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:15,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:35:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:15,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544951306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:35:15,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1005843377] [2022-11-20 20:35:15,893 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-20 20:35:15,893 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:35:15,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:35:15,910 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:35:15,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:35:16,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,034 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 [2022-11-20 20:35:16,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,104 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 [2022-11-20 20:35:16,177 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 [2022-11-20 20:35:16,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,194 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 [2022-11-20 20:35:16,213 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 [2022-11-20 20:35:16,266 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 [2022-11-20 20:35:16,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,289 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 [2022-11-20 20:35:16,335 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 [2022-11-20 20:35:16,397 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 [2022-11-20 20:35:16,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,426 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 [2022-11-20 20:35:16,450 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 [2022-11-20 20:35:16,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,584 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 [2022-11-20 20:35:16,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,672 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 [2022-11-20 20:35:16,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,696 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 [2022-11-20 20:35:16,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,723 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 [2022-11-20 20:35:16,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,791 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 [2022-11-20 20:35:16,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,816 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 [2022-11-20 20:35:16,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:16,849 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 [2022-11-20 20:35:17,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,040 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-20 20:35:17,040 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 [2022-11-20 20:35:17,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,095 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-20 20:35:17,096 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 [2022-11-20 20:35:17,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,139 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:35:17,140 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 [2022-11-20 20:35:17,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,326 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 [2022-11-20 20:35:17,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,394 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 [2022-11-20 20:35:17,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,414 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 [2022-11-20 20:35:17,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,437 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 [2022-11-20 20:35:17,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,489 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 [2022-11-20 20:35:17,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,522 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 [2022-11-20 20:35:17,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,555 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 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-20 20:35:17,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,679 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-20 20:35:17,679 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 [2022-11-20 20:35:17,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,721 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:35:17,722 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 [2022-11-20 20:35:17,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:17,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:17,772 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-20 20:35:17,773 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 [2022-11-20 20:35:18,137 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-20 20:35:18,138 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 [2022-11-20 20:35:18,497 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-20 20:35:18,497 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 393 treesize of output 384 [2022-11-20 20:35:18,542 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-20 20:35:18,546 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 393 treesize of output 384 [2022-11-20 20:35:18,602 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-11-20 20:35:18,603 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 389 treesize of output 386 [2022-11-20 20:35:18,690 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:35:22,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1005843377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:22,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:35:22,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 10 [2022-11-20 20:35:22,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833684147] [2022-11-20 20:35:22,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:22,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:35:22,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:22,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:35:22,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:35:22,121 INFO L87 Difference]: Start difference. First operand 65 states and 69 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) [2022-11-20 20:35:23,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:23,040 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-11-20 20:35:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:35:23,041 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 [2022-11-20 20:35:23,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:23,042 INFO L225 Difference]: With dead ends: 76 [2022-11-20 20:35:23,042 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 20:35:23,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:35:23,043 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 20 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:23,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 94 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:35:23,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 20:35:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2022-11-20 20:35:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 44 states have (on average 1.75) internal successors, (77), 71 states have internal predecessors, (77), 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) [2022-11-20 20:35:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2022-11-20 20:35:23,049 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 11 [2022-11-20 20:35:23,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:23,049 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2022-11-20 20:35:23,049 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) [2022-11-20 20:35:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2022-11-20 20:35:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 20:35:23,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:23,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 20:35:23,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:35:23,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:35:23,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:23,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:23,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1488330647, now seen corresponding path program 1 times [2022-11-20 20:35:23,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:23,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126799801] [2022-11-20 20:35:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:23,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:23,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:23,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126799801] [2022-11-20 20:35:23,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126799801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:35:23,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129705230] [2022-11-20 20:35:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:23,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:35:23,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:35:23,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:35:23,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:35:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:23,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:35:23,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:35:23,587 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 [2022-11-20 20:35:23,618 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:35:23,618 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 [2022-11-20 20:35:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:23,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:35:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:23,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129705230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:35:23,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2060351186] [2022-11-20 20:35:23,742 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 20:35:23,742 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:35:23,766 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:35:23,767 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:35:23,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:35:23,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,787 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 [2022-11-20 20:35:23,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,818 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 [2022-11-20 20:35:23,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,852 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 [2022-11-20 20:35:23,866 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 [2022-11-20 20:35:23,881 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 [2022-11-20 20:35:23,907 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 [2022-11-20 20:35:23,920 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 [2022-11-20 20:35:23,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,935 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 [2022-11-20 20:35:23,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:23,975 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 [2022-11-20 20:35:23,988 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 [2022-11-20 20:35:23,999 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 [2022-11-20 20:35:24,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,063 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 [2022-11-20 20:35:24,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,103 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 [2022-11-20 20:35:24,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,117 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 [2022-11-20 20:35:24,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,138 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 [2022-11-20 20:35:24,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,182 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 [2022-11-20 20:35:24,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,203 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 [2022-11-20 20:35:24,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,234 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 [2022-11-20 20:35:24,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:24,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:24,376 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:24,377 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 [2022-11-20 20:35:24,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,401 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:24,408 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:35:24,409 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 [2022-11-20 20:35:24,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:24,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:24,461 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:24,461 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 [2022-11-20 20:35:24,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,592 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 [2022-11-20 20:35:24,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,646 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 [2022-11-20 20:35:24,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,665 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 [2022-11-20 20:35:24,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,682 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 [2022-11-20 20:35:24,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,734 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 [2022-11-20 20:35:24,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,754 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 [2022-11-20 20:35:24,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,771 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 [2022-11-20 20:35:24,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:24,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:24,864 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:24,864 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 [2022-11-20 20:35:24,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:24,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:24,904 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:24,904 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 [2022-11-20 20:35:24,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:24,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:24,934 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:35:24,934 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 [2022-11-20 20:35:25,260 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-20 20:35:25,260 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 [2022-11-20 20:35:25,556 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:35:25,557 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 [2022-11-20 20:35:25,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:35:25,576 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 [2022-11-20 20:35:25,615 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-20 20:35:25,616 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 [2022-11-20 20:35:25,683 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:35:29,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2060351186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:29,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:35:29,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2022-11-20 20:35:29,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880745708] [2022-11-20 20:35:29,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:29,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:35:29,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:29,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:35:29,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:35:29,347 INFO L87 Difference]: Start difference. First operand 72 states and 77 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) [2022-11-20 20:35:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:30,401 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2022-11-20 20:35:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:35:30,402 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 [2022-11-20 20:35:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:30,403 INFO L225 Difference]: With dead ends: 74 [2022-11-20 20:35:30,403 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 20:35:30,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:35:30,404 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 8 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:30,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 116 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:35:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 20:35:30,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-11-20 20:35:30,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 72 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) [2022-11-20 20:35:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-11-20 20:35:30,417 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 15 [2022-11-20 20:35:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:30,418 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-11-20 20:35:30,418 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) [2022-11-20 20:35:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-11-20 20:35:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 20:35:30,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:30,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:30,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:35:30,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 20:35:30,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:30,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:30,624 INFO L85 PathProgramCache]: Analyzing trace with hash 891856784, now seen corresponding path program 1 times [2022-11-20 20:35:30,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:30,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839876511] [2022-11-20 20:35:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:30,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:35:30,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:30,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839876511] [2022-11-20 20:35:30,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839876511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:35:30,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602822938] [2022-11-20 20:35:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:30,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:35:30,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:35:30,890 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:35:30,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:35:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:31,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 20:35:31,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:35:31,011 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 [2022-11-20 20:35:31,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,037 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 [2022-11-20 20:35:31,062 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 20:35:31,062 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 [2022-11-20 20:35:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 20:35:31,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:35:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 20:35:31,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602822938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:35:31,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [36898318] [2022-11-20 20:35:31,158 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-20 20:35:31,158 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:35:31,158 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:35:31,159 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:35:31,159 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:35:31,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,178 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 [2022-11-20 20:35:31,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,205 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 [2022-11-20 20:35:31,232 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 [2022-11-20 20:35:31,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,245 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 [2022-11-20 20:35:31,255 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 [2022-11-20 20:35:31,275 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 [2022-11-20 20:35:31,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,291 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 [2022-11-20 20:35:31,301 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 [2022-11-20 20:35:31,322 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 [2022-11-20 20:35:31,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,336 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 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-20 20:35:31,351 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 [2022-11-20 20:35:31,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,432 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 [2022-11-20 20:35:31,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,482 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 [2022-11-20 20:35:31,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,498 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 [2022-11-20 20:35:31,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,516 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 [2022-11-20 20:35:31,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,563 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 [2022-11-20 20:35:31,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,584 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 [2022-11-20 20:35:31,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,609 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 [2022-11-20 20:35:31,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:31,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:31,731 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:31,732 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 [2022-11-20 20:35:31,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:31,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:31,771 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:31,771 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 [2022-11-20 20:35:31,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:31,803 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:35:31,804 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 [2022-11-20 20:35:31,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:31,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:31,955 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:35:31,955 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 [2022-11-20 20:35:31,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:31,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:31,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:31,991 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-20 20:35:31,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 385 [2022-11-20 20:35:32,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:32,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:32,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:32,043 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-20 20:35:32,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 386 treesize of output 381 [2022-11-20 20:35:32,523 INFO L321 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2022-11-20 20:35:32,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 596 treesize of output 590 [2022-11-20 20:35:32,745 INFO L321 Elim1Store]: treesize reduction 200, result has 14.5 percent of original size [2022-11-20 20:35:32,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 647 treesize of output 539 [2022-11-20 20:35:32,804 INFO L321 Elim1Store]: treesize reduction 130, result has 17.7 percent of original size [2022-11-20 20:35:32,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 8 case distinctions, treesize of input 643 treesize of output 639 [2022-11-20 20:35:32,907 INFO L321 Elim1Store]: treesize reduction 200, result has 13.8 percent of original size [2022-11-20 20:35:32,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 647 treesize of output 617 [2022-11-20 20:35:33,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:33,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:33,055 INFO L321 Elim1Store]: treesize reduction 125, result has 5.3 percent of original size [2022-11-20 20:35:33,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 658 treesize of output 642 [2022-11-20 20:35:33,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,130 INFO L321 Elim1Store]: treesize reduction 200, result has 17.0 percent of original size [2022-11-20 20:35:33,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 645 treesize of output 548 [2022-11-20 20:35:33,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,210 INFO L321 Elim1Store]: treesize reduction 222, result has 16.9 percent of original size [2022-11-20 20:35:33,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 645 treesize of output 626 [2022-11-20 20:35:33,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:33,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:33,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,336 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:35:33,337 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 [2022-11-20 20:35:33,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:33,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,371 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:33,371 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 [2022-11-20 20:35:33,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:33,401 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,415 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:33,416 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 [2022-11-20 20:35:33,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,547 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-20 20:35:33,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 385 [2022-11-20 20:35:33,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,594 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-20 20:35:33,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 386 treesize of output 381 [2022-11-20 20:35:33,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:33,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:33,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:33,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:33,642 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 20:35:33,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 379 treesize of output 360 [2022-11-20 20:35:34,013 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 [2022-11-20 20:35:34,021 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 [2022-11-20 20:35:34,039 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 [2022-11-20 20:35:34,045 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 [2022-11-20 20:35:34,052 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 [2022-11-20 20:35:34,068 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:35:38,117 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1266#(and (<= 1 |ULTIMATE.start_dll_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|) (= |ULTIMATE.start_dll_remove_last_~head#1.offset| |ULTIMATE.start_dll_remove_last_#in~head#1.offset|) (= |ULTIMATE.start_dll_remove_last_~head#1.base| |ULTIMATE.start_dll_remove_last_#in~head#1.base|) (not (= (select |#valid| |ULTIMATE.start_dll_remove_last_~head#1.base|) 1)) (= |ULTIMATE.start_dll_remove_last_#in~head#1.offset| |ULTIMATE.start_main_~#s~0#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$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_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= |ULTIMATE.start_dll_remove_last_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 20:35:38,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:35:38,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:35:38,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2022-11-20 20:35:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153076361] [2022-11-20 20:35:38,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:35:38,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:35:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:35:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-20 20:35:38,120 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2022-11-20 20:35:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:38,260 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2022-11-20 20:35:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:35:38,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 [2022-11-20 20:35:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:38,261 INFO L225 Difference]: With dead ends: 115 [2022-11-20 20:35:38,261 INFO L226 Difference]: Without dead ends: 115 [2022-11-20 20:35:38,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-11-20 20:35:38,262 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 124 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:38,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 88 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 95 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-11-20 20:35:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-20 20:35:38,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 73. [2022-11-20 20:35:38,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.702127659574468) 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) [2022-11-20 20:35:38,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2022-11-20 20:35:38,268 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 19 [2022-11-20 20:35:38,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:38,269 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2022-11-20 20:35:38,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2022-11-20 20:35:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2022-11-20 20:35:38,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 20:35:38,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:38,270 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:38,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:35:38,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:35:38,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:38,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:38,485 INFO L85 PathProgramCache]: Analyzing trace with hash 891856785, now seen corresponding path program 1 times [2022-11-20 20:35:38,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:38,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319487379] [2022-11-20 20:35:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:38,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:38,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:38,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319487379] [2022-11-20 20:35:38,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319487379] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:35:38,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936417833] [2022-11-20 20:35:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:38,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:35:38,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:35:38,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:35:38,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:35:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:38,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 20:35:38,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:35:38,968 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 [2022-11-20 20:35:38,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:38,994 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 [2022-11-20 20:35:39,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:39,040 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 [2022-11-20 20:35:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:35:39,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:35:43,360 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| Int)) (or (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| Int) (v_ArrVal_359 Int)) (or (not (< |v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| |c_#StackHeapBarrier|)) (forall ((v_ArrVal_360 Int)) (<= (+ |c_ULTIMATE.start_main_~#s~0#1.offset| 4) (select (store (store |c_#length| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| v_ArrVal_359) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| v_ArrVal_360) |c_ULTIMATE.start_main_~#s~0#1.base|))))) (not (< |v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| |c_#StackHeapBarrier|)))) (<= 0 |c_ULTIMATE.start_main_~#s~0#1.offset|)) is different from false [2022-11-20 20:35:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-20 20:35:43,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936417833] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:35:43,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1908981125] [2022-11-20 20:35:43,363 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-20 20:35:43,363 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:35:43,364 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:35:43,364 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:35:43,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:35:43,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,387 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 [2022-11-20 20:35:43,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,414 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 [2022-11-20 20:35:43,440 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 [2022-11-20 20:35:43,453 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 [2022-11-20 20:35:43,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,463 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 [2022-11-20 20:35:43,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,487 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 [2022-11-20 20:35:43,500 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 [2022-11-20 20:35:43,509 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 [2022-11-20 20:35:43,549 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 [2022-11-20 20:35:43,561 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 [2022-11-20 20:35:43,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,576 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 [2022-11-20 20:35:43,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,652 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 [2022-11-20 20:35:43,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,705 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 [2022-11-20 20:35:43,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,722 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 [2022-11-20 20:35:43,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,742 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 [2022-11-20 20:35:43,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,779 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 [2022-11-20 20:35:43,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,796 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 [2022-11-20 20:35:43,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,821 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 [2022-11-20 20:35:43,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:43,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:43,931 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:43,932 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 384 treesize of output 383 [2022-11-20 20:35:43,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:43,961 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:35:43,962 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 390 treesize of output 371 [2022-11-20 20:35:43,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:43,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:43,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:43,995 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:43,995 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 384 treesize of output 383 [2022-11-20 20:35:44,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:44,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:44,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:44,200 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-20 20:35:44,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 393 treesize of output 388 [2022-11-20 20:35:44,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:44,252 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 20:35:44,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 386 treesize of output 367 [2022-11-20 20:35:44,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:44,271 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 0 case distinctions, treesize of input 389 treesize of output 384 [2022-11-20 20:35:44,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,639 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-20 20:35:44,639 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 [2022-11-20 20:35:44,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,699 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 [2022-11-20 20:35:44,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,716 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 [2022-11-20 20:35:44,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,733 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 34 treesize of output 25 [2022-11-20 20:35:44,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,772 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 [2022-11-20 20:35:44,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,786 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 [2022-11-20 20:35:44,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,809 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 [2022-11-20 20:35:44,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:44,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:44,915 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:44,916 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 384 treesize of output 383 [2022-11-20 20:35:44,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:44,945 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:35:44,945 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 390 treesize of output 371 [2022-11-20 20:35:44,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:44,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:44,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:44,976 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:35:44,976 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 384 treesize of output 383 [2022-11-20 20:35:45,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:45,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:45,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:45,166 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-20 20:35:45,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 393 treesize of output 388 [2022-11-20 20:35:45,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:45,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:45,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:45,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:45,200 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:35:45,200 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 386 treesize of output 367 [2022-11-20 20:35:45,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:45,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:45,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:45,233 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-20 20:35:45,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 389 treesize of output 384 [2022-11-20 20:35:45,612 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 [2022-11-20 20:35:45,642 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 [2022-11-20 20:35:45,659 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 [2022-11-20 20:35:45,665 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 [2022-11-20 20:35:45,673 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 [2022-11-20 20:35:45,685 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:35:49,742 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1586#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (not (<= (+ |ULTIMATE.start_dll_remove_last_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_remove_last_~head#1.base|))) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_dll_remove_last_~head#1.offset| |ULTIMATE.start_dll_remove_last_#in~head#1.offset|) (= |ULTIMATE.start_dll_remove_last_~head#1.base| |ULTIMATE.start_dll_remove_last_#in~head#1.base|) (= |ULTIMATE.start_dll_remove_last_#in~head#1.offset| |ULTIMATE.start_main_~#s~0#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$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_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= |ULTIMATE.start_dll_remove_last_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-20 20:35:49,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:35:49,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:35:49,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 10 [2022-11-20 20:35:49,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058931276] [2022-11-20 20:35:49,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:35:49,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:35:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:49,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:35:49,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=313, Unknown=1, NotChecked=38, Total=462 [2022-11-20 20:35:49,744 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 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) [2022-11-20 20:35:49,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:49,967 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2022-11-20 20:35:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:35:49,967 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 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 [2022-11-20 20:35:49,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:49,968 INFO L225 Difference]: With dead ends: 102 [2022-11-20 20:35:49,968 INFO L226 Difference]: Without dead ends: 102 [2022-11-20 20:35:49,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=146, Invalid=409, Unknown=1, NotChecked=44, Total=600 [2022-11-20 20:35:49,969 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 397 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:49,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 39 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 113 Invalid, 0 Unknown, 94 Unchecked, 0.1s Time] [2022-11-20 20:35:49,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-20 20:35:49,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 69. [2022-11-20 20:35:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.5625) internal successors, (75), 68 states have internal predecessors, (75), 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) [2022-11-20 20:35:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-11-20 20:35:49,973 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 19 [2022-11-20 20:35:49,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:49,974 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-11-20 20:35:49,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 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) [2022-11-20 20:35:49,974 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-11-20 20:35:49,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 20:35:49,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:49,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:49,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:35:50,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 20:35:50,181 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:50,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:50,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1877756558, now seen corresponding path program 1 times [2022-11-20 20:35:50,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:50,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992574470] [2022-11-20 20:35:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:50,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:35:50,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:50,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992574470] [2022-11-20 20:35:50,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992574470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:50,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:50,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:35:50,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823148327] [2022-11-20 20:35:50,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:50,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:35:50,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:50,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:35:50,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:35:50,349 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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) [2022-11-20 20:35:50,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:50,559 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2022-11-20 20:35:50,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:35:50,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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 20 [2022-11-20 20:35:50,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:50,561 INFO L225 Difference]: With dead ends: 99 [2022-11-20 20:35:50,561 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 20:35:50,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:35:50,562 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 131 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:50,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 117 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:35:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 20:35:50,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 69. [2022-11-20 20:35:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 68 states have internal predecessors, (76), 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) [2022-11-20 20:35:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2022-11-20 20:35:50,566 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 20 [2022-11-20 20:35:50,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:50,567 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2022-11-20 20:35:50,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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) [2022-11-20 20:35:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2022-11-20 20:35:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 20:35:50,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:50,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:50,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:35:50,568 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:50,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:50,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1877756559, now seen corresponding path program 1 times [2022-11-20 20:35:50,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:50,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657984220] [2022-11-20 20:35:50,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:50,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:35:50,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:50,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657984220] [2022-11-20 20:35:50,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657984220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:50,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:50,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:35:50,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659232847] [2022-11-20 20:35:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:50,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:35:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:35:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:35:50,805 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2022-11-20 20:35:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:51,033 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2022-11-20 20:35:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:35:51,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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 20 [2022-11-20 20:35:51,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:51,034 INFO L225 Difference]: With dead ends: 93 [2022-11-20 20:35:51,034 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 20:35:51,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:35:51,035 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 211 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:51,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 101 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:35:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 20:35:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 67. [2022-11-20 20:35:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 66 states have internal predecessors, (73), 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) [2022-11-20 20:35:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2022-11-20 20:35:51,040 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 20 [2022-11-20 20:35:51,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:51,040 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2022-11-20 20:35:51,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2022-11-20 20:35:51,041 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2022-11-20 20:35:51,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 20:35:51,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:51,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:51,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:35:51,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:51,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:51,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1916465157, now seen corresponding path program 1 times [2022-11-20 20:35:51,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:51,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124812405] [2022-11-20 20:35:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:51,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 20:35:51,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:51,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124812405] [2022-11-20 20:35:51,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124812405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:51,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:51,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:35:51,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855337643] [2022-11-20 20:35:51,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:51,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:35:51,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:51,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:35:51,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:35:51,109 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:35:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:51,129 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2022-11-20 20:35:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:35:51,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-20 20:35:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:51,130 INFO L225 Difference]: With dead ends: 94 [2022-11-20 20:35:51,130 INFO L226 Difference]: Without dead ends: 94 [2022-11-20 20:35:51,130 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 [2022-11-20 20:35:51,131 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 109 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:51,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 94 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:35:51,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-20 20:35:51,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 66. [2022-11-20 20:35:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 65 states have internal predecessors, (71), 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) [2022-11-20 20:35:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2022-11-20 20:35:51,135 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 21 [2022-11-20 20:35:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:51,135 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2022-11-20 20:35:51,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:35:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2022-11-20 20:35:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 20:35:51,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:51,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:51,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 20:35:51,137 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:51,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:51,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1703376233, now seen corresponding path program 1 times [2022-11-20 20:35:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:51,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25489406] [2022-11-20 20:35:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:35:51,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:51,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25489406] [2022-11-20 20:35:51,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25489406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:51,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:51,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:35:51,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32027807] [2022-11-20 20:35:51,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:51,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:35:51,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:51,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:35:51,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:35:51,329 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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) [2022-11-20 20:35:51,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:51,450 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2022-11-20 20:35:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:35:51,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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 [2022-11-20 20:35:51,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:51,451 INFO L225 Difference]: With dead ends: 65 [2022-11-20 20:35:51,451 INFO L226 Difference]: Without dead ends: 65 [2022-11-20 20:35:51,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:35:51,452 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 174 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:51,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 55 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:35:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-20 20:35:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-20 20:35:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 64 states have internal predecessors, (70), 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) [2022-11-20 20:35:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2022-11-20 20:35:51,456 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 23 [2022-11-20 20:35:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:51,456 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2022-11-20 20:35:51,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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) [2022-11-20 20:35:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2022-11-20 20:35:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 20:35:51,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:51,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:51,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 20:35:51,458 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:51,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:51,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1703360589, now seen corresponding path program 1 times [2022-11-20 20:35:51,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:51,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100555309] [2022-11-20 20:35:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:51,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 20:35:51,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:51,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100555309] [2022-11-20 20:35:51,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100555309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:51,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:51,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:35:51,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455380428] [2022-11-20 20:35:51,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:51,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:35:51,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:35:51,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:35:51,538 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-11-20 20:35:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:51,639 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2022-11-20 20:35:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:35:51,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 [2022-11-20 20:35:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:51,644 INFO L225 Difference]: With dead ends: 65 [2022-11-20 20:35:51,644 INFO L226 Difference]: Without dead ends: 65 [2022-11-20 20:35:51,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:35:51,645 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:51,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 65 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:35:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-20 20:35:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2022-11-20 20:35:51,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 63 states have internal predecessors, (70), 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) [2022-11-20 20:35:51,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2022-11-20 20:35:51,650 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 23 [2022-11-20 20:35:51,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:51,651 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2022-11-20 20:35:51,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-11-20 20:35:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2022-11-20 20:35:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 20:35:51,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:51,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:51,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 20:35:51,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1703360588, now seen corresponding path program 1 times [2022-11-20 20:35:51,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:51,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649099905] [2022-11-20 20:35:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:51,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:35:52,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:52,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649099905] [2022-11-20 20:35:52,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649099905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:52,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:52,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:35:52,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942320876] [2022-11-20 20:35:52,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:52,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:35:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:52,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:35:52,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:35:52,015 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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) [2022-11-20 20:35:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:52,352 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2022-11-20 20:35:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:35:52,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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 [2022-11-20 20:35:52,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:52,353 INFO L225 Difference]: With dead ends: 103 [2022-11-20 20:35:52,353 INFO L226 Difference]: Without dead ends: 103 [2022-11-20 20:35:52,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:35:52,354 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 233 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:52,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 110 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:35:52,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-20 20:35:52,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2022-11-20 20:35:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 70 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) [2022-11-20 20:35:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2022-11-20 20:35:52,357 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 23 [2022-11-20 20:35:52,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:52,357 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2022-11-20 20:35:52,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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) [2022-11-20 20:35:52,358 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2022-11-20 20:35:52,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 20:35:52,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:52,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:52,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 20:35:52,358 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:52,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:52,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1265055569, now seen corresponding path program 1 times [2022-11-20 20:35:52,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:52,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771413378] [2022-11-20 20:35:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:52,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:35:52,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:52,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771413378] [2022-11-20 20:35:52,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771413378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:52,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:52,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:35:52,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863372069] [2022-11-20 20:35:52,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:52,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:35:52,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:52,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:35:52,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:35:52,512 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 7 states, 6 states have (on average 4.0) 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) [2022-11-20 20:35:52,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:52,686 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2022-11-20 20:35:52,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:35:52,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) 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 [2022-11-20 20:35:52,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:52,687 INFO L225 Difference]: With dead ends: 87 [2022-11-20 20:35:52,687 INFO L226 Difference]: Without dead ends: 87 [2022-11-20 20:35:52,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:35:52,688 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 179 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:52,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 84 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:35:52,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-20 20:35:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 74. [2022-11-20 20:35:52,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 73 states have internal predecessors, (84), 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) [2022-11-20 20:35:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2022-11-20 20:35:52,704 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 24 [2022-11-20 20:35:52,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:52,704 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2022-11-20 20:35:52,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) 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) [2022-11-20 20:35:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2022-11-20 20:35:52,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 20:35:52,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:52,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:52,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 20:35:52,705 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:52,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash -562016871, now seen corresponding path program 1 times [2022-11-20 20:35:52,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:52,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708961592] [2022-11-20 20:35:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:52,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 20:35:52,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:52,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708961592] [2022-11-20 20:35:52,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708961592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:52,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:52,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:35:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234081678] [2022-11-20 20:35:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:52,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:35:52,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:35:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:35:52,788 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2022-11-20 20:35:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:52,881 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-11-20 20:35:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:35:52,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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 [2022-11-20 20:35:52,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:52,884 INFO L225 Difference]: With dead ends: 73 [2022-11-20 20:35:52,884 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 20:35:52,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:35:52,885 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:52,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 81 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:35:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 20:35:52,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-20 20:35:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 72 states have internal predecessors, (83), 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) [2022-11-20 20:35:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-11-20 20:35:52,891 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 25 [2022-11-20 20:35:52,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:52,892 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-11-20 20:35:52,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2022-11-20 20:35:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-11-20 20:35:52,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 20:35:52,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:52,896 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:52,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 20:35:52,897 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:52,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:52,897 INFO L85 PathProgramCache]: Analyzing trace with hash -546984227, now seen corresponding path program 1 times [2022-11-20 20:35:52,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:52,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101185035] [2022-11-20 20:35:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:52,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:35:53,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:53,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101185035] [2022-11-20 20:35:53,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101185035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:53,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:35:53,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:35:53,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619418071] [2022-11-20 20:35:53,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:53,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:35:53,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:53,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:35:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:35:53,291 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2022-11-20 20:35:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:53,644 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2022-11-20 20:35:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:35:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 [2022-11-20 20:35:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:53,645 INFO L225 Difference]: With dead ends: 75 [2022-11-20 20:35:53,645 INFO L226 Difference]: Without dead ends: 75 [2022-11-20 20:35:53,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:35:53,646 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 177 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:53,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 110 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:35:53,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-20 20:35:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2022-11-20 20:35:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 71 states have internal predecessors, (79), 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) [2022-11-20 20:35:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2022-11-20 20:35:53,649 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 25 [2022-11-20 20:35:53,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:53,649 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2022-11-20 20:35:53,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2022-11-20 20:35:53,649 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2022-11-20 20:35:53,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 20:35:53,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:53,650 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] [2022-11-20 20:35:53,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 20:35:53,650 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:53,651 INFO L85 PathProgramCache]: Analyzing trace with hash -242653710, now seen corresponding path program 1 times [2022-11-20 20:35:53,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:53,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710422953] [2022-11-20 20:35:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:53,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:35:53,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:53,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710422953] [2022-11-20 20:35:53,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710422953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:35:53,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812567817] [2022-11-20 20:35:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:53,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:35:53,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:35:53,883 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:35:53,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:35:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:54,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 20:35:54,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:35:54,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:54,166 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 [2022-11-20 20:35:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 20:35:54,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:35:54,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812567817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:35:54,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:35:54,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-20 20:35:54,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935698556] [2022-11-20 20:35:54,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:35:54,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:35:54,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:35:54,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:35:54,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:35:54,172 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2022-11-20 20:35:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:35:54,293 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2022-11-20 20:35:54,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:35:54,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 [2022-11-20 20:35:54,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:35:54,294 INFO L225 Difference]: With dead ends: 78 [2022-11-20 20:35:54,294 INFO L226 Difference]: Without dead ends: 78 [2022-11-20 20:35:54,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-20 20:35:54,295 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 144 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:35:54,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 54 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:35:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-20 20:35:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2022-11-20 20:35:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.368421052631579) internal successors, (78), 70 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) [2022-11-20 20:35:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2022-11-20 20:35:54,299 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 26 [2022-11-20 20:35:54,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:35:54,299 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2022-11-20 20:35:54,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2022-11-20 20:35:54,300 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2022-11-20 20:35:54,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 20:35:54,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:35:54,300 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] [2022-11-20 20:35:54,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 20:35:54,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 20:35:54,506 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:35:54,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:35:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash 223361305, now seen corresponding path program 1 times [2022-11-20 20:35:54,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:35:54,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933845007] [2022-11-20 20:35:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:54,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:35:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:55,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:35:55,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933845007] [2022-11-20 20:35:55,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933845007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:35:55,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800731102] [2022-11-20 20:35:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:35:55,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:35:55,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:35:55,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:35:55,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 20:35:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:35:55,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-20 20:35:55,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:35:55,421 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 [2022-11-20 20:35:55,495 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 20:35:55,496 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 [2022-11-20 20:35:55,543 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 [2022-11-20 20:35:55,590 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 [2022-11-20 20:35:55,620 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 20:35:55,620 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 [2022-11-20 20:35:55,815 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 [2022-11-20 20:35:55,906 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:35:55,906 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 41 treesize of output 16 [2022-11-20 20:35:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:35:55,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:35:55,962 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 28 treesize of output 20 [2022-11-20 20:35:56,075 INFO L321 Elim1Store]: treesize reduction 5, result has 79.2 percent of original size [2022-11-20 20:35:56,076 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 28 treesize of output 27 [2022-11-20 20:35:56,085 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int) (v_ArrVal_994 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_994))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (= (select (select .cse1 .cse0) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|))))) is different from false [2022-11-20 20:35:56,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:35:56,250 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 76 treesize of output 51 [2022-11-20 20:35:56,293 INFO L321 Elim1Store]: treesize reduction 36, result has 48.6 percent of original size [2022-11-20 20:35:56,293 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 114 treesize of output 115 [2022-11-20 20:35:56,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:35:56,308 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 99 treesize of output 91 [2022-11-20 20:35:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-20 20:35:56,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800731102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:35:56,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1986324153] [2022-11-20 20:35:56,523 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-20 20:35:56,523 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:35:56,523 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:35:56,523 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:35:56,523 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:35:56,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,546 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 [2022-11-20 20:35:56,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,577 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 [2022-11-20 20:35:56,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,606 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 [2022-11-20 20:35:56,615 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 [2022-11-20 20:35:56,626 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 [2022-11-20 20:35:56,648 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 [2022-11-20 20:35:56,656 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 [2022-11-20 20:35:56,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,671 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 [2022-11-20 20:35:56,695 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 [2022-11-20 20:35:56,710 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 [2022-11-20 20:35:56,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,723 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 [2022-11-20 20:35:56,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,819 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 [2022-11-20 20:35:56,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,873 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 [2022-11-20 20:35:56,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,899 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 [2022-11-20 20:35:56,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,919 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 [2022-11-20 20:35:56,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,969 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 [2022-11-20 20:35:56,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:56,991 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 [2022-11-20 20:35:57,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,015 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 [2022-11-20 20:35:57,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,060 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 [2022-11-20 20:35:57,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,082 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 [2022-11-20 20:35:57,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,102 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 [2022-11-20 20:35:57,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:57,155 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 [2022-11-20 20:35:57,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:57,176 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 [2022-11-20 20:35:57,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,200 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 [2022-11-20 20:35:57,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,486 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-20 20:35:57,487 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 [2022-11-20 20:35:57,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,539 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 [2022-11-20 20:35:57,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,565 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 34 treesize of output 25 [2022-11-20 20:35:57,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,579 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 [2022-11-20 20:35:57,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,614 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 [2022-11-20 20:35:57,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,631 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 [2022-11-20 20:35:57,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,651 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 [2022-11-20 20:35:57,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,690 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 [2022-11-20 20:35:57,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,720 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 [2022-11-20 20:35:57,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,745 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 [2022-11-20 20:35:57,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,791 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 [2022-11-20 20:35:57,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,819 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 [2022-11-20 20:35:57,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,850 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 [2022-11-20 20:35:57,900 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 [2022-11-20 20:35:57,906 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 [2022-11-20 20:35:57,922 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 [2022-11-20 20:35:57,929 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 [2022-11-20 20:35:57,938 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 [2022-11-20 20:35:57,950 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 [2022-11-20 20:35:57,958 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 [2022-11-20 20:35:57,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,968 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 [2022-11-20 20:35:57,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:57,982 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 [2022-11-20 20:35:57,993 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 [2022-11-20 20:35:58,003 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 [2022-11-20 20:35:58,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:58,026 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 [2022-11-20 20:35:58,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:58,059 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 20:35:58,059 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 [2022-11-20 20:35:58,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:58,087 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 20:35:58,087 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 [2022-11-20 20:35:58,156 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 [2022-11-20 20:35:58,163 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 [2022-11-20 20:35:58,179 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 15 treesize of output 1 [2022-11-20 20:35:58,187 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 [2022-11-20 20:35:58,194 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 [2022-11-20 20:35:58,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:58,220 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 [2022-11-20 20:35:58,229 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 [2022-11-20 20:35:58,236 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 [2022-11-20 20:35:58,265 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 [2022-11-20 20:35:58,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:58,291 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 [2022-11-20 20:35:58,300 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 [2022-11-20 20:35:58,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:58,338 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 20:35:58,338 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 [2022-11-20 20:35:58,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:58,362 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 20:35:58,363 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 [2022-11-20 20:35:58,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:58,380 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 [2022-11-20 20:35:58,654 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 [2022-11-20 20:35:58,663 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 [2022-11-20 20:35:58,682 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 [2022-11-20 20:35:58,690 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 [2022-11-20 20:35:58,706 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 [2022-11-20 20:35:58,770 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 [2022-11-20 20:35:58,778 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 [2022-11-20 20:35:58,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:58,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:58,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:58,801 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 20:35:58,801 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 [2022-11-20 20:35:58,917 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 [2022-11-20 20:35:58,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:58,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:35:58,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:35:58,938 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 20:35:58,939 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 [2022-11-20 20:35:58,969 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 [2022-11-20 20:35:59,025 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:36:03,289 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3717#(and (<= 0 |ULTIMATE.start_dll_remove_last_~head#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_dll_remove_last_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= 0 |ULTIMATE.start_dll_remove_last_#in~head#1.base|) (<= |ULTIMATE.start_dll_remove_last_~head#1.offset| 0) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 0 |ULTIMATE.start_dll_remove_last_~head#1.base|) (<= 0 |ULTIMATE.start_dll_remove_last_#in~head#1.offset|) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (not (= (select |#valid| |ULTIMATE.start_dll_remove_last_~last~0#1.base|) 1)) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.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_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 (+ |ULTIMATE.start_dll_remove_last_~snd_to_last~0#1.offset| 4)) (= |#NULL.base| 0))' at error location [2022-11-20 20:36:03,289 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:36:03,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:36:03,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 31 [2022-11-20 20:36:03,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698803368] [2022-11-20 20:36:03,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:36:03,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 20:36:03,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:36:03,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 20:36:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1942, Unknown=13, NotChecked=90, Total=2256 [2022-11-20 20:36:03,292 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 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) [2022-11-20 20:36:04,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:36:04,269 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2022-11-20 20:36:04,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 20:36:04,270 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 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 [2022-11-20 20:36:04,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:36:04,271 INFO L225 Difference]: With dead ends: 117 [2022-11-20 20:36:04,271 INFO L226 Difference]: Without dead ends: 117 [2022-11-20 20:36:04,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=409, Invalid=2774, Unknown=13, NotChecked=110, Total=3306 [2022-11-20 20:36:04,272 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 185 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:36:04,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 265 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 585 Invalid, 0 Unknown, 190 Unchecked, 0.4s Time] [2022-11-20 20:36:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-20 20:36:04,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 72. [2022-11-20 20:36:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 71 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) [2022-11-20 20:36:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-11-20 20:36:04,275 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 26 [2022-11-20 20:36:04,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:36:04,275 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-11-20 20:36:04,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 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) [2022-11-20 20:36:04,276 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-11-20 20:36:04,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 20:36:04,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:36:04,276 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] [2022-11-20 20:36:04,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 20:36:04,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:36:04,484 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-20 20:36:04,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:36:04,485 INFO L85 PathProgramCache]: Analyzing trace with hash 223361306, now seen corresponding path program 1 times [2022-11-20 20:36:04,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:36:04,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5572794] [2022-11-20 20:36:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:36:04,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:36:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:36:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:36:05,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:36:05,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5572794] [2022-11-20 20:36:05,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5572794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:36:05,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357348922] [2022-11-20 20:36:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:36:05,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:36:05,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:36:05,510 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:36:05,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2866012-d522-40be-803a-baab7111e4ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 20:36:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:36:05,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-20 20:36:05,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:36:05,691 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 [2022-11-20 20:36:05,802 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 20:36:05,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 20:36:05,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 20:36:05,865 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 [2022-11-20 20:36:05,936 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 [2022-11-20 20:36:05,949 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 [2022-11-20 20:36:06,055 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 20:36:06,057 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 60 [2022-11-20 20:36:06,069 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 31 treesize of output 31 [2022-11-20 20:36:06,698 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-20 20:36:06,698 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 62 [2022-11-20 20:36:06,728 INFO L321 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2022-11-20 20:36:06,729 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 38 [2022-11-20 20:36:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:36:06,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:36:07,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:36:07,553 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 265 treesize of output 329 [2022-11-20 20:36:09,193 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 5))) (and (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse6 (select (select .cse3 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse2 (select (select .cse8 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ 4 .cse6))) (let ((.cse1 (select (select .cse8 .cse2) .cse4)) (.cse0 (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse7 (select (select .cse7 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse1 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse2)) (= .cse1 .cse0) (< (select (select .cse3 .cse2) .cse4) .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse6)))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse16 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse14 (select (select .cse16 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse11 (select (select .cse12 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse13 (+ .cse14 4))) (let ((.cse10 (select (select .cse16 .cse11) .cse13)) (.cse9 (select (let ((.cse15 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse15 (select (select .cse15 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) (or (= .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (< .cse10 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse11)) (= .cse10 0) (= .cse9 (select (select .cse12 .cse11) .cse13)) (not (= .cse14 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse19 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1100))) (let ((.cse18 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1101) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse17 (select (select .cse19 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse17 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse18)) (<= 0 (+ (select (select .cse19 .cse18) (+ .cse17 4)) 4)))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse24 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse21 (select (select .cse24 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse23 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse20 (select (select .cse24 .cse21) (+ 4 .cse23)))) (or (= .cse20 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse20 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse21)) (= .cse20 (select (let ((.cse22 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse22 (select (select .cse22 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse23))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse25 (select (let ((.cse32 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse32 (select (select .cse32 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) (or (= .cse25 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse28 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse30 (select (select .cse28 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse31 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse27 (select (select .cse31 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse29 (+ .cse30 4))) (let ((.cse26 (select (select .cse31 .cse27) .cse29))) (or (= .cse26 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse27)) (= (select (select .cse28 .cse27) .cse29) 0) (= .cse25 .cse26) (not (= .cse30 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse39 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse38 (select (select .cse39 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse36 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse34 (select (select .cse36 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse37 (+ .cse38 4))) (let ((.cse33 (select (select .cse39 .cse34) .cse37))) (or (< .cse33 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse34)) (= .cse33 0) (= (select (let ((.cse35 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse35 (select (select .cse35 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select .cse36 .cse34) .cse37)) (not (= .cse38 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (or (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse43 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse41 (select (select .cse43 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse42 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse40 (select (select .cse43 .cse41) (+ 4 .cse42)))) (or (= .cse40 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse40 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse41)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse42))))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (= (select (let ((.cse44 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse44 (select (select .cse44 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse50 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse48 (select (select .cse50 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse49 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse46 (select (select .cse50 .cse48) (+ 4 .cse49)))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse45 (select (let ((.cse47 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse47 (select (select .cse47 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse45 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse46 .cse45)))) (= .cse46 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse46 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse48)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse49))))))) (or (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (= (select (let ((.cse51 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse51 (select (select .cse51 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse55 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse56 (select (select .cse55 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse52 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse53 (select (select .cse52 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse54 (+ .cse56 4))) (or (= (select (select .cse52 .cse53) .cse54) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse53)) (= (select (select .cse55 .cse53) .cse54) 0) (not (= .cse56 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse59 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse61 (select (select .cse59 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse62 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse58 (select (select .cse62 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse60 (+ 4 .cse61))) (let ((.cse57 (select (select .cse62 .cse58) .cse60))) (or (= .cse57 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse57 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse58)) (< (select (select .cse59 .cse58) .cse60) .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse61)))))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse66 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse64 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse65 (select (select .cse66 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse63 (select (select .cse66 .cse64) (+ .cse65 4)))) (or (< .cse63 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse64)) (= .cse63 0) (not (= .cse65 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse72 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse71 (select (select .cse72 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse67 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse68 (select (select .cse67 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse69 (+ .cse71 4))) (let ((.cse70 (select (select .cse72 .cse68) .cse69))) (or (= (select (select .cse67 .cse68) .cse69) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (< .cse70 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse68)) (= .cse70 0) (not (= .cse71 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse76 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse77 (select (select .cse76 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse73 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse74 (select (select .cse73 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse75 (+ 4 .cse77))) (or (= (select (select .cse73 .cse74) .cse75) 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse74)) (< (select (select .cse76 .cse74) .cse75) .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse77))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse80 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse83 (select (select .cse80 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse84 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse79 (select (select .cse84 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse81 (+ .cse83 4))) (let ((.cse78 (select (select .cse84 .cse79) .cse81))) (or (= .cse78 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse79)) (= (select (select .cse80 .cse79) .cse81) 0) (= (select (let ((.cse82 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse82 (select (select .cse82 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) .cse78) (not (= .cse83 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))))) is different from false [2022-11-20 20:36:10,175 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse87 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) (let ((.cse6 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 5)) (.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse87 0))) (.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse87 0)))) (and (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse4 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse3 (select (select .cse4 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse10 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse1 (select (select .cse10 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ .cse3 4))) (let ((.cse0 (select (select .cse10 .cse1) .cse5)) (.cse2 (select (let ((.cse7 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse7 (select (select .cse7 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse0 0) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse3)) (< (select (select .cse4 .cse1) .cse5) .cse6) (= .cse0 .cse2))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse18 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse13 (select (select .cse18 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse15 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse11 (select (select .cse15 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse16 (+ .cse13 4))) (let ((.cse12 (select (select .cse18 .cse11) .cse16)) (.cse14 (select (let ((.cse17 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse17 (select (select .cse17 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (not (= .cse11 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse12 0) (< .cse12 .cse6) (not (= .cse13 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= .cse14 (select (select .cse15 .cse11) .cse16)) (= .cse14 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse24 (select (let ((.cse26 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse26 (select (select .cse26 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse20 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse23 (select (select .cse20 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse25 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse19 (select (select .cse25 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse21 (+ .cse23 4))) (let ((.cse22 (select (select .cse25 .cse19) .cse21))) (or (not (= .cse19 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select (select .cse20 .cse19) .cse21) 0) (= .cse22 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse23 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= .cse24 .cse22))))))) (= .cse24 |c_ULTIMATE.start_dll_create_~head~0#1.base|)))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse28 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse31 (select (select .cse28 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse30 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse27 (select (select .cse30 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse29 (+ .cse31 4))) (or (not (= .cse27 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select (select .cse28 .cse27) .cse29) 0) (= (select (select .cse30 .cse27) .cse29) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse31 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (= (select (let ((.cse32 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse32 (select (select .cse32 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (= (select (let ((.cse33 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse33 (select (select .cse33 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse37 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse35 (select (select .cse37 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse36 (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse34 (select (select .cse37 .cse35) (+ .cse36 4)))) (or (= .cse34 0) (not (= .cse35 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse36)) (= .cse34 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse42 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse41 (select (select .cse42 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse38 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse39 (select (select .cse38 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse40 (+ .cse41 4))) (or (= (select (select .cse38 .cse39) .cse40) 0) (not (= .cse39 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse41)) (< (select (select .cse42 .cse39) .cse40) .cse6)))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse46 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse43 (select (select (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse45 (select (select .cse46 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse44 (select (select .cse46 .cse43) (+ .cse45 4)))) (or (not (= .cse43 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse44 0) (< .cse44 .cse6) (not (= .cse45 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse53 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse49 (select (select .cse53 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse51 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse47 (select (select .cse51 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse52 (+ .cse49 4))) (let ((.cse48 (select (select .cse53 .cse47) .cse52))) (or (not (= .cse47 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse48 0) (< .cse48 .cse6) (not (= .cse49 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= (select (let ((.cse50 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse50 (select (select .cse50 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) (select (select .cse51 .cse47) .cse52)))))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse54 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1100))) (let ((.cse55 (select (select (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1101) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse56 (select (select .cse54 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (<= 0 (+ (select (select .cse54 .cse55) (+ .cse56 4)) 4)) (not (= .cse55 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= .cse56 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse60 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse59 (select (select .cse60 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse62 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse58 (select (select .cse62 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse61 (+ .cse59 4))) (let ((.cse57 (select (select .cse62 .cse58) .cse61))) (or (= .cse57 0) (not (= .cse58 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse59)) (< (select (select .cse60 .cse58) .cse61) .cse6) (= .cse57 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse68 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse64 (select (select .cse68 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse67 (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse63 (select (select .cse68 .cse64) (+ .cse67 4)))) (or (= .cse63 0) (not (= .cse64 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse65 (select (let ((.cse66 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse66 (select (select .cse66 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse65 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse63 .cse65)))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse67)) (= .cse63 |c_ULTIMATE.start_dll_create_~head~0#1.base|)))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse74 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse73 (select (select .cse74 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse71 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse69 (select (select .cse71 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse72 (+ .cse73 4))) (let ((.cse70 (select (select .cse74 .cse69) .cse72))) (or (not (= .cse69 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse70 0) (< .cse70 .cse6) (= (select (select .cse71 .cse69) .cse72) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse73 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse76 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse79 (select (select .cse76 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse81 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse75 (select (select .cse81 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse77 (+ .cse79 4))) (let ((.cse78 (select (select .cse81 .cse75) .cse77))) (or (not (= .cse75 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select (select .cse76 .cse75) .cse77) 0) (= .cse78 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse79 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= (select (let ((.cse80 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse80 (select (select .cse80 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) .cse78))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse86 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse83 (select (select .cse86 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse84 (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse82 (select (select .cse86 .cse83) (+ .cse84 4)))) (or (= .cse82 0) (not (= .cse83 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse84)) (= .cse82 (select (let ((.cse85 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse85 (select (select .cse85 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (= .cse82 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))))) is different from false [2022-11-20 20:36:10,348 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:36:10,349 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 308 treesize of output 238 [2022-11-20 20:36:11,002 INFO L321 Elim1Store]: treesize reduction 325, result has 32.2 percent of original size [2022-11-20 20:36:11,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 1054 treesize of output 1007 [2022-11-20 20:36:11,055 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:36:11,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 787 treesize of output 409 [2022-11-20 20:36:11,404 INFO L321 Elim1Store]: treesize reduction 210, result has 39.5 percent of original size [2022-11-20 20:36:11,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 1244 treesize of output 1177 [2022-11-20 20:36:11,525 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 902 treesize of output 876 [2022-11-20 20:36:12,028 INFO L321 Elim1Store]: treesize reduction 134, result has 62.0 percent of original size [2022-11-20 20:36:12,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 1158 treesize of output 1192 [2022-11-20 20:36:12,272 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:36:12,273 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 1000 treesize of output 964 [2022-11-20 20:36:12,603 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:36:12,604 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 1497 treesize of output 1395 [2022-11-20 20:36:12,816 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:36:12,817 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 1718 treesize of output 1620 [2022-11-20 20:36:53,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-20 20:36:53,860 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 20:36:53,860 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 123 treesize of output 1 [2022-11-20 20:36:55,750 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 20:36:55,750 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 126 treesize of output 1 [2022-11-20 20:36:56,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-20 20:36:58,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-20 20:37:00,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-20 20:37:05,102 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 20:37:05,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:05,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:05,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:05,860 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 20:37:06,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:06,881 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 20:37:08,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:09,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:09,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:10,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:10,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:11,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:11,459 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 20:37:11,496 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 20:37:11,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:12,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:12,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:31,942 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 20:37:32,036 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 20:37:32,164 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 20:37:35,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 20:37:36,922 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 20:37:40,635 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:37:40,635 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 173 treesize of output 177 [2022-11-20 20:39:45,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:39:45,885 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:39:45,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:39:47,035 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-20 20:39:47,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 176 treesize of output 172 [2022-11-20 20:39:47,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:39:47,403 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:39:47,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:39:47,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:39:47,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:39:47,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:39:47,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:39:48,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:39:48,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:39:48,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:39:48,206 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:39:48,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:39:49,841 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-20 20:39:49,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 309 treesize of output 281 [2022-11-20 20:39:50,468 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-20 20:39:50,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 231 treesize of output 215 [2022-11-20 20:39:50,842 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-20 20:39:50,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1768 treesize of output 1636 [2022-11-20 20:39:59,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:39:59,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:39:59,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:40:00,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:40:00,706 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:40:00,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:40:06,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:40:06,420 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:40:06,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:40:09,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:40:09,207 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:40:09,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:40:29,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:40:29,531 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:40:29,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:40:31,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:40:31,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:40:31,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:40:32,055 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-20 20:40:32,056 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 176 treesize of output 172 [2022-11-20 20:40:36,394 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-20 20:40:36,395 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 317 treesize of output 289 [2022-11-20 20:40:37,976 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-20 20:40:37,977 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 765 treesize of output 681 [2022-11-20 20:40:48,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:40:48,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:40:48,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:40:48,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:40:48,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:40:48,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:40:55,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:40:55,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:40:55,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:40:59,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:40:59,549 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:40:59,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:41:01,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:41:01,841 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:41:01,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-20 20:41:05,971 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 26 treesize of output 14 [2022-11-20 20:41:18,505 WARN L233 SmtUtils]: Spent 11.59s on a formula simplification that was a NOOP. DAG size: 1251 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 20:41:18,506 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:41:18,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 300 case distinctions, treesize of input 1047 treesize of output 3180