./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2c_insert_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2c_insert_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh --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 535caea86e22f289c2fcb0364594f5e7b1dfaabfa814e56099346e6a240c0067 --- 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-2329fc7 [2022-12-14 11:08:03,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:08:03,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:08:03,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:08:03,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:08:03,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:08:03,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:08:03,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:08:03,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:08:03,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:08:03,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:08:03,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:08:03,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:08:03,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:08:03,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:08:03,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:08:03,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:08:03,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:08:03,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:08:03,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:08:03,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:08:03,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:08:03,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:08:03,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:08:03,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:08:03,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:08:03,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:08:03,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:08:03,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:08:03,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:08:03,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:08:03,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:08:03,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:08:03,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:08:03,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:08:03,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:08:03,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:08:03,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:08:03,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:08:03,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:08:03,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:08:03,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 11:08:03,407 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:08:03,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:08:03,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:08:03,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:08:03,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:08:03,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:08:03,409 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:08:03,409 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:08:03,409 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:08:03,409 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:08:03,409 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:08:03,409 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:08:03,409 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:08:03,410 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:08:03,410 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:08:03,410 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:08:03,410 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:08:03,410 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:08:03,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 11:08:03,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 11:08:03,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:08:03,411 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:08:03,411 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:08:03,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:08:03,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:08:03,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:08:03,412 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 11:08:03,412 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 11:08:03,412 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 11:08:03,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:08:03,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:08:03,412 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:08:03,412 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:08:03,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:08:03,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:08:03,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:08:03,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:08:03,413 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:08:03,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:08:03,413 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:08:03,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:08:03,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:08:03,413 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_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 535caea86e22f289c2fcb0364594f5e7b1dfaabfa814e56099346e6a240c0067 [2022-12-14 11:08:03,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:08:03,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:08:03,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:08:03,592 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:08:03,592 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:08:03,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-simple/dll2c_insert_equal.i [2022-12-14 11:08:06,117 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:08:06,307 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:08:06,307 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/sv-benchmarks/c/list-simple/dll2c_insert_equal.i [2022-12-14 11:08:06,315 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/data/152eab3f7/741e3d10139c4def85b019bdfd3e1805/FLAG9bb13010c [2022-12-14 11:08:06,691 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/data/152eab3f7/741e3d10139c4def85b019bdfd3e1805 [2022-12-14 11:08:06,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:08:06,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:08:06,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:08:06,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:08:06,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:08:06,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:06,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3506b7ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06, skipping insertion in model container [2022-12-14 11:08:06,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:06,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:08:06,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:08:06,925 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_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/sv-benchmarks/c/list-simple/dll2c_insert_equal.i[24877,24890] [2022-12-14 11:08:06,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:08:06,934 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:08:06,966 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_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/sv-benchmarks/c/list-simple/dll2c_insert_equal.i[24877,24890] [2022-12-14 11:08:06,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:08:06,983 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:08:06,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06 WrapperNode [2022-12-14 11:08:06,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:08:06,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:08:06,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:08:06,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:08:06,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:06,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:07,014 INFO L138 Inliner]: procedures = 127, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2022-12-14 11:08:07,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:08:07,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:08:07,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:08:07,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:08:07,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:07,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:07,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:07,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:07,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:07,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:07,042 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:07,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:07,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:08:07,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:08:07,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:08:07,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:08:07,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (1/1) ... [2022-12-14 11:08:07,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:08:07,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:07,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:08:07,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:08:07,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:08:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:08:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-12-14 11:08:07,109 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-12-14 11:08:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 11:08:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:08:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:08:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 11:08:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 11:08:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:08:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 11:08:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:08:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:08:07,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:08:07,213 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:08:07,215 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:08:07,610 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:08:07,641 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:08:07,641 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 11:08:07,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:08:07 BoogieIcfgContainer [2022-12-14 11:08:07,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:08:07,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:08:07,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:08:07,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:08:07,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:08:06" (1/3) ... [2022-12-14 11:08:07,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fd5d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:08:07, skipping insertion in model container [2022-12-14 11:08:07,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:06" (2/3) ... [2022-12-14 11:08:07,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fd5d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:08:07, skipping insertion in model container [2022-12-14 11:08:07,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:08:07" (3/3) ... [2022-12-14 11:08:07,651 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_insert_equal.i [2022-12-14 11:08:07,665 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:08:07,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2022-12-14 11:08:07,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:08:07,708 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;@f5478a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:08:07,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2022-12-14 11:08:07,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 60 states have (on average 2.4) internal successors, (144), 132 states have internal predecessors, (144), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:08:07,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:08:07,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:07,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:08:07,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:07,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash 265769672, now seen corresponding path program 1 times [2022-12-14 11:08:07,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:07,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504035552] [2022-12-14 11:08:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:07,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:08:07,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:07,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504035552] [2022-12-14 11:08:07,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504035552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:07,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:07,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:08:07,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014470999] [2022-12-14 11:08:07,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:08,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:08:08,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:08:08,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:08:08,036 INFO L87 Difference]: Start difference. First operand has 137 states, 60 states have (on average 2.4) internal successors, (144), 132 states have internal predecessors, (144), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-14 11:08:08,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:08,184 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2022-12-14 11:08:08,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:08:08,186 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), 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) Word has length 5 [2022-12-14 11:08:08,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:08,192 INFO L225 Difference]: With dead ends: 134 [2022-12-14 11:08:08,192 INFO L226 Difference]: Without dead ends: 132 [2022-12-14 11:08:08,193 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 [2022-12-14 11:08:08,196 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 8 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:08,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 189 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:08:08,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-12-14 11:08:08,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-12-14 11:08:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 59 states have (on average 2.305084745762712) internal successors, (136), 127 states have internal predecessors, (136), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:08:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2022-12-14 11:08:08,225 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 5 [2022-12-14 11:08:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:08,225 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2022-12-14 11:08:08,225 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), 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) [2022-12-14 11:08:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2022-12-14 11:08:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:08:08,226 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:08,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:08:08,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:08:08,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:08,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:08,227 INFO L85 PathProgramCache]: Analyzing trace with hash 265769671, now seen corresponding path program 1 times [2022-12-14 11:08:08,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:08,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194930181] [2022-12-14 11:08:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:08,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:08:08,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:08,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194930181] [2022-12-14 11:08:08,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194930181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:08,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:08,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:08:08,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341717899] [2022-12-14 11:08:08,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:08,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:08:08,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:08,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:08:08,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:08:08,264 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-14 11:08:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:08,366 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2022-12-14 11:08:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:08:08,366 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), 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) Word has length 5 [2022-12-14 11:08:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:08,368 INFO L225 Difference]: With dead ends: 129 [2022-12-14 11:08:08,368 INFO L226 Difference]: Without dead ends: 129 [2022-12-14 11:08:08,368 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 [2022-12-14 11:08:08,370 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 3 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:08,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 182 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:08:08,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-14 11:08:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-12-14 11:08:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 124 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:08:08,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2022-12-14 11:08:08,380 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 5 [2022-12-14 11:08:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:08,380 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2022-12-14 11:08:08,380 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), 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) [2022-12-14 11:08:08,380 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2022-12-14 11:08:08,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 11:08:08,381 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:08,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:08,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:08:08,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:08,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:08,382 INFO L85 PathProgramCache]: Analyzing trace with hash -912672461, now seen corresponding path program 1 times [2022-12-14 11:08:08,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:08,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535452395] [2022-12-14 11:08:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:08,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:08:08,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:08,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535452395] [2022-12-14 11:08:08,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535452395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:08,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:08,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:08:08,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101204223] [2022-12-14 11:08:08,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:08,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:08:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:08,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:08:08,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:08:08,531 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:08:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:08,702 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2022-12-14 11:08:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:08:08,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 11:08:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:08,705 INFO L225 Difference]: With dead ends: 133 [2022-12-14 11:08:08,705 INFO L226 Difference]: Without dead ends: 133 [2022-12-14 11:08:08,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:08:08,706 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 8 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:08,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 351 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:08:08,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-12-14 11:08:08,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2022-12-14 11:08:08,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 61 states have (on average 2.2459016393442623) internal successors, (137), 126 states have internal predecessors, (137), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:08:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 143 transitions. [2022-12-14 11:08:08,717 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 143 transitions. Word has length 11 [2022-12-14 11:08:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:08,717 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 143 transitions. [2022-12-14 11:08:08,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:08:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 143 transitions. [2022-12-14 11:08:08,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 11:08:08,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:08,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:08,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:08:08,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:08,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:08,719 INFO L85 PathProgramCache]: Analyzing trace with hash -912672460, now seen corresponding path program 1 times [2022-12-14 11:08:08,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:08,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697561511] [2022-12-14 11:08:08,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:08,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:08:08,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:08,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697561511] [2022-12-14 11:08:08,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697561511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:08,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:08,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:08:08,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575145100] [2022-12-14 11:08:08,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:08,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:08:08,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:08,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:08:08,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:08:08,780 INFO L87 Difference]: Start difference. First operand 131 states and 143 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:08:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:08,810 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2022-12-14 11:08:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:08:08,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 11:08:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:08,811 INFO L225 Difference]: With dead ends: 130 [2022-12-14 11:08:08,811 INFO L226 Difference]: Without dead ends: 130 [2022-12-14 11:08:08,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:08:08,812 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 10 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:08,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 228 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:08:08,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-14 11:08:08,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-12-14 11:08:08,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 60 states have (on average 2.2333333333333334) internal successors, (134), 125 states have internal predecessors, (134), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:08:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2022-12-14 11:08:08,820 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 11 [2022-12-14 11:08:08,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:08,821 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2022-12-14 11:08:08,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:08:08,821 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2022-12-14 11:08:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 11:08:08,822 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:08,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:08,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 11:08:08,822 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:08,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash -974857227, now seen corresponding path program 1 times [2022-12-14 11:08:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:08,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322565221] [2022-12-14 11:08:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:08,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:08:08,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:08,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322565221] [2022-12-14 11:08:08,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322565221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:08,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:08,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:08:08,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332370651] [2022-12-14 11:08:08,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:08,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:08:08,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:08,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:08:08,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:08:08,936 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:08:09,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:09,105 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2022-12-14 11:08:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:08:09,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-12-14 11:08:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:09,106 INFO L225 Difference]: With dead ends: 130 [2022-12-14 11:08:09,106 INFO L226 Difference]: Without dead ends: 130 [2022-12-14 11:08:09,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:08:09,107 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 18 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:09,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 346 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:08:09,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-14 11:08:09,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2022-12-14 11:08:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 60 states have (on average 2.216666666666667) internal successors, (133), 124 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:08:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2022-12-14 11:08:09,112 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 19 [2022-12-14 11:08:09,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:09,112 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2022-12-14 11:08:09,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:08:09,112 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2022-12-14 11:08:09,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 11:08:09,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:09,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:09,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 11:08:09,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:09,114 INFO L85 PathProgramCache]: Analyzing trace with hash -974857226, now seen corresponding path program 1 times [2022-12-14 11:08:09,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:09,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946193963] [2022-12-14 11:08:09,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:09,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:08:09,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:09,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946193963] [2022-12-14 11:08:09,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946193963] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:09,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:09,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:08:09,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842936047] [2022-12-14 11:08:09,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:09,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:08:09,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:09,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:08:09,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:08:09,277 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:08:09,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:09,453 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2022-12-14 11:08:09,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:08:09,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-12-14 11:08:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:09,454 INFO L225 Difference]: With dead ends: 129 [2022-12-14 11:08:09,454 INFO L226 Difference]: Without dead ends: 129 [2022-12-14 11:08:09,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:08:09,456 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 16 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:09,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 415 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:08:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-14 11:08:09,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2022-12-14 11:08:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 60 states have (on average 2.2) internal successors, (132), 123 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:08:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2022-12-14 11:08:09,462 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 19 [2022-12-14 11:08:09,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:09,462 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2022-12-14 11:08:09,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:08:09,462 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2022-12-14 11:08:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 11:08:09,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:09,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:09,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 11:08:09,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:09,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:09,463 INFO L85 PathProgramCache]: Analyzing trace with hash -534924906, now seen corresponding path program 1 times [2022-12-14 11:08:09,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:09,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407122466] [2022-12-14 11:08:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:09,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:09,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:08:09,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:09,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407122466] [2022-12-14 11:08:09,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407122466] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:09,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688808532] [2022-12-14 11:08:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:09,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:08:09,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:09,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:08:09,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:08:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:09,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 11:08:09,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:08:09,788 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 [2022-12-14 11:08:09,832 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_234 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_234))))) is different from true [2022-12-14 11:08:09,896 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:08:09,896 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 [2022-12-14 11:08:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-12-14 11:08:09,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:08:09,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688808532] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:09,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [360613915] [2022-12-14 11:08:09,983 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 11:08:09,983 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:08:09,986 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:08:09,990 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:08:09,990 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:08:10,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,041 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 [2022-12-14 11:08:10,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:10,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:08:10,099 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 [2022-12-14 11:08:10,110 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 [2022-12-14 11:08:10,115 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 [2022-12-14 11:08:10,120 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 [2022-12-14 11:08:10,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:10,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:10,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:10,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,161 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 36 treesize of output 23 [2022-12-14 11:08:10,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,172 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 36 treesize of output 23 [2022-12-14 11:08:10,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:08:10,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:10,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:10,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:10,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:10,424 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:10,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:10,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:10,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:10,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:10,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:10,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:10,631 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:10,633 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:10,697 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:10,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:10,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:10,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:10,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:10,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:10,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:10,937 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:10,938 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:10,941 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:10,990 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 11 [2022-12-14 11:08:11,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:08:11,013 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 21 [2022-12-14 11:08:11,101 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:11,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:11,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:11,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:11,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:11,220 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 90 for LOIs [2022-12-14 11:08:11,629 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:08:13,843 WARN L859 $PredicateComparison]: unable to prove that (and (< |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (not (= |c_node_create_~temp~0#1.base| 0)) (= |c_node_create_#in~data#1| |c_node_create_~data#1|) (<= 0 |c_#NULL.base|) (= |c_node_create_~temp~0#1.offset| 0) (let ((.cse9 (+ |c_node_create_~temp~0#1.offset| 4)) (.cse10 (+ 8 |c_node_create_~temp~0#1.offset|))) (let ((.cse0 (< 0 |c_#StackHeapBarrier|)) (.cse1 (= |c_node_create_#in~data#1| 1)) (.cse3 (= |c_#NULL.offset| 0)) (.cse8 (select |c_old(#memory_int)| |c_node_create_~temp~0#1.base|)) (.cse4 (= (store |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base| (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_node_create_~temp~0#1.base|) |c_node_create_~temp~0#1.offset| 0) .cse9 0) .cse10 (select (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) .cse10))) |c_#memory_$Pointer$.base|)) (.cse5 (= |c_#NULL.base| 0)) (.cse6 (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| 1))) (.cse7 (= (select |c_old(#valid)| |c_node_create_~temp~0#1.base|) 0)) (.cse11 (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_node_create_~temp~0#1.base| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_node_create_~temp~0#1.base|) |c_node_create_~temp~0#1.offset| 0) .cse9 0) .cse10 (select (select |c_#memory_$Pointer$.offset| |c_node_create_~temp~0#1.base|) .cse10))))) (.cse12 (= (store |c_old(#length)| |c_node_create_~temp~0#1.base| 12) |c_#length|))) (or (let ((.cse2 (select |c_old(#memory_int)| 1))) (and (exists ((|v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_6| Int)) (and (= (select |c_old(#length)| |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_6|) 4) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_6|) (= (select |c_old(#valid)| |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_6|) 1) (not (= |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_6| 0)))) .cse0 .cse1 (= 48 (select .cse2 0)) .cse3 (= (select |c_old(#valid)| 1) 1) .cse4 (= (select |c_old(#valid)| 2) 1) (= (select |c_old(#valid)| 0) 0) .cse5 .cse6 (= (select .cse2 1) 0) (= 21 (select |c_old(#length)| 2)) .cse7 (exists ((v_DerPreprocessor_3 Int) (v_DerPreprocessor_2 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_node_create_~temp~0#1.base| (store (store (store .cse8 |c_node_create_~temp~0#1.offset| v_DerPreprocessor_2) .cse9 v_DerPreprocessor_3) .cse10 |c_node_create_~data#1|)))) (= (select |c_old(#length)| 1) 2) .cse11 .cse12)) (and .cse0 (exists ((|v_ULTIMATE.start_dll_circular_create_~last~0#1.base_BEFORE_CALL_3| Int)) (let ((.cse14 (select |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_dll_circular_create_~last~0#1.base_BEFORE_CALL_3|)) (.cse13 (select |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_circular_create_~last~0#1.base_BEFORE_CALL_3|))) (and (= |c_node_create_#in~data#1| (select (select |c_old(#memory_int)| |v_ULTIMATE.start_dll_circular_create_~last~0#1.base_BEFORE_CALL_3|) 8)) (= (select |c_old(#valid)| |v_ULTIMATE.start_dll_circular_create_~last~0#1.base_BEFORE_CALL_3|) 1) (= (select .cse13 4) 0) (= (select |c_old(#length)| |v_ULTIMATE.start_dll_circular_create_~last~0#1.base_BEFORE_CALL_3|) 12) (not (= |v_ULTIMATE.start_dll_circular_create_~last~0#1.base_BEFORE_CALL_3| 0)) (< |v_ULTIMATE.start_dll_circular_create_~last~0#1.base_BEFORE_CALL_3| |c_#StackHeapBarrier|) (= (select .cse14 0) 0) (= 0 (select .cse14 4)) (= (select .cse13 0) 0)))) .cse1 .cse3 (exists ((v_DerPreprocessor_4 Int) (v_DerPreprocessor_1 Int)) (= (store |c_old(#memory_int)| |c_node_create_~temp~0#1.base| (store (store (store .cse8 |c_node_create_~temp~0#1.offset| v_DerPreprocessor_1) .cse9 v_DerPreprocessor_4) .cse10 |c_node_create_~data#1|)) |c_#memory_int|)) .cse4 .cse5 .cse6 .cse7 .cse11 .cse12)))) (<= 1 |c_node_create_#in~data#1|) (= (select |c_#valid| |c_node_create_~temp~0#1.base|) 1) (<= 0 |c_#NULL.offset|) (= |c_node_create_~temp~0#1.base| |c_node_create_#res#1.base|) (<= 0 |c_#StackHeapBarrier|) (= |c_node_create_#res#1.offset| |c_node_create_~temp~0#1.offset|) (<= |c_node_create_#in~data#1| 1) (<= |c_#NULL.base| 0) (<= |c_#NULL.offset| 0) (<= (+ 12 |c_node_create_~temp~0#1.offset|) (select |c_#length| |c_node_create_~temp~0#1.base|))) is different from true [2022-12-14 11:08:14,735 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1824#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#s~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 4) 0) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 4) 0) (not (= |ULTIMATE.start_dll_circular_create_~new_head~0#1.base| 0)) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= |ULTIMATE.start_dll_circular_create_~data#1| |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_dll_circular_create_#in~len#1| |ULTIMATE.start_main_~len~0#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (< |ULTIMATE.start_dll_circular_create_~head~0#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_dll_circular_create_#in~len#1| |ULTIMATE.start_dll_circular_create_~len#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~data~0#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 8) |ULTIMATE.start_dll_circular_create_~data#1|) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#s~0#1.base|) 0) (= (select |#length| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 12) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (not (= |ULTIMATE.start_dll_circular_create_~head~0#1.base| 0)) (< |ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_dll_circular_create_~head~0#1.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (= |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (not (= (select |#valid| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:08:14,735 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:08:14,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:08:14,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2022-12-14 11:08:14,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267810426] [2022-12-14 11:08:14,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:08:14,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 11:08:14,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:14,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 11:08:14,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=398, Unknown=2, NotChecked=82, Total=552 [2022-12-14 11:08:14,737 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:08:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:15,076 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2022-12-14 11:08:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:08:15,077 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-12-14 11:08:15,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:15,077 INFO L225 Difference]: With dead ends: 152 [2022-12-14 11:08:15,077 INFO L226 Difference]: Without dead ends: 152 [2022-12-14 11:08:15,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=87, Invalid=470, Unknown=3, NotChecked=90, Total=650 [2022-12-14 11:08:15,078 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 110 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:15,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 412 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 572 Invalid, 0 Unknown, 160 Unchecked, 0.3s Time] [2022-12-14 11:08:15,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-14 11:08:15,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 133. [2022-12-14 11:08:15,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 64 states have (on average 2.15625) internal successors, (138), 127 states have internal predecessors, (138), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:08:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2022-12-14 11:08:15,084 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 21 [2022-12-14 11:08:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:15,084 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2022-12-14 11:08:15,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:08:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2022-12-14 11:08:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 11:08:15,085 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:15,085 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:15,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:08:15,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 11:08:15,286 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:15,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:15,286 INFO L85 PathProgramCache]: Analyzing trace with hash -534924905, now seen corresponding path program 1 times [2022-12-14 11:08:15,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:15,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707416890] [2022-12-14 11:08:15,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:15,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:08:15,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:15,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707416890] [2022-12-14 11:08:15,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707416890] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:15,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581597408] [2022-12-14 11:08:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:15,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:08:15,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:15,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:08:15,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:08:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:15,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 11:08:15,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:08:15,633 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 [2022-12-14 11:08:15,722 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_335 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_335) |c_#length|)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-12-14 11:08:15,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:15,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:08:15,755 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:15,756 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 [2022-12-14 11:08:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-12-14 11:08:15,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:08:17,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581597408] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:17,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [816629960] [2022-12-14 11:08:17,924 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 11:08:17,924 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:08:17,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:08:17,925 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:08:17,925 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:08:17,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:17,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:17,939 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 [2022-12-14 11:08:17,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:17,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:17,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:17,974 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 [2022-12-14 11:08:17,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:08:17,983 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 [2022-12-14 11:08:17,987 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 [2022-12-14 11:08:17,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:08:17,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:17,999 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 21 treesize of output 20 [2022-12-14 11:08:18,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:18,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:18,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,019 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 36 treesize of output 23 [2022-12-14 11:08:18,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-12-14 11:08:18,032 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 [2022-12-14 11:08:18,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:18,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:18,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:18,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,149 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:18,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:18,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:18,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:18,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:18,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:18,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:18,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,234 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:18,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:18,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:18,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:18,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:18,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:18,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:18,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:08:18,347 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 11 [2022-12-14 11:08:18,357 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 21 [2022-12-14 11:08:18,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,407 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:18,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:18,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:18,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:18,438 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 94 for LOIs [2022-12-14 11:08:18,766 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:08:22,624 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2219#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#s~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 4) 0) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 4) 0) (not (= |ULTIMATE.start_dll_circular_create_~new_head~0#1.base| 0)) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= |ULTIMATE.start_dll_circular_create_~data#1| |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_dll_circular_create_#in~len#1| |ULTIMATE.start_main_~len~0#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (< |ULTIMATE.start_dll_circular_create_~head~0#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_dll_circular_create_#in~len#1| |ULTIMATE.start_dll_circular_create_~len#1|) (< (select |#length| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~data~0#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 8) |ULTIMATE.start_dll_circular_create_~data#1|) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#s~0#1.base|) 0) (= (select |#length| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 12) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (not (= |ULTIMATE.start_dll_circular_create_~head~0#1.base| 0)) (< |ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_dll_circular_create_~head~0#1.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (= |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:08:22,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:08:22,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:08:22,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2022-12-14 11:08:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072519662] [2022-12-14 11:08:22,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:08:22,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 11:08:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 11:08:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=764, Unknown=1, NotChecked=56, Total=930 [2022-12-14 11:08:22,626 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 17 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 11:08:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:23,194 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2022-12-14 11:08:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:08:23,194 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 21 [2022-12-14 11:08:23,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:23,195 INFO L225 Difference]: With dead ends: 135 [2022-12-14 11:08:23,195 INFO L226 Difference]: Without dead ends: 135 [2022-12-14 11:08:23,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=131, Invalid=864, Unknown=1, NotChecked=60, Total=1056 [2022-12-14 11:08:23,196 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 4 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:23,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 575 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 936 Invalid, 0 Unknown, 134 Unchecked, 0.5s Time] [2022-12-14 11:08:23,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-12-14 11:08:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2022-12-14 11:08:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 64 states have (on average 2.140625) internal successors, (137), 127 states have internal predecessors, (137), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:08:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2022-12-14 11:08:23,201 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 21 [2022-12-14 11:08:23,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:23,202 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2022-12-14 11:08:23,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 11:08:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2022-12-14 11:08:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 11:08:23,202 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:23,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:23,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:08:23,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:08:23,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:23,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1333402676, now seen corresponding path program 1 times [2022-12-14 11:08:23,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:23,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637569679] [2022-12-14 11:08:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:23,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:08:23,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:23,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637569679] [2022-12-14 11:08:23,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637569679] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:23,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478070695] [2022-12-14 11:08:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:23,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:08:23,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:23,464 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:08:23,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:08:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:23,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:08:23,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:08:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:08:23,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:08:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:08:23,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478070695] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:08:23,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [698550689] [2022-12-14 11:08:23,577 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 11:08:23,577 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:08:23,577 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:08:23,578 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:08:23,578 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:08:23,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,593 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 [2022-12-14 11:08:23,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:23,623 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 [2022-12-14 11:08:23,627 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 [2022-12-14 11:08:23,633 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 [2022-12-14 11:08:23,637 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 [2022-12-14 11:08:23,641 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 [2022-12-14 11:08:23,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:23,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:23,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:23,669 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 [2022-12-14 11:08:23,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,676 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 36 treesize of output 23 [2022-12-14 11:08:23,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-12-14 11:08:23,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:23,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:23,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:23,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:23,888 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:23,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:24,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:24,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:24,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:24,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:24,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:24,055 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,056 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,104 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:24,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:24,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:24,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:08:24,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:08:24,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:24,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:08:24,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:24,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:08:24,307 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,308 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,309 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,310 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,339 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 11 [2022-12-14 11:08:24,347 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 21 [2022-12-14 11:08:24,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:08:24,419 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:24,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:24,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:24,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:24,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:24,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:24,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:24,633 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,635 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,636 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,689 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:24,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:24,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:24,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:24,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:24,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:24,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:24,894 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,895 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,896 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:24,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:24,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:24,982 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-12-14 11:08:24,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:24,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:24,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:24,996 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-12-14 11:08:25,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:25,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:25,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:25,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:25,010 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-12-14 11:08:25,092 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:25,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:25,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:25,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:25,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:25,249 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 90 for LOIs [2022-12-14 11:08:25,508 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:08:29,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [698550689] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:29,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:08:29,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 6, 6] total 17 [2022-12-14 11:08:29,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231097160] [2022-12-14 11:08:29,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:29,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 11:08:29,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:29,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 11:08:29,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-12-14 11:08:29,219 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:08:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:32,118 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2022-12-14 11:08:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 11:08:32,119 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-12-14 11:08:32,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:32,120 INFO L225 Difference]: With dead ends: 139 [2022-12-14 11:08:32,120 INFO L226 Difference]: Without dead ends: 139 [2022-12-14 11:08:32,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-12-14 11:08:32,120 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 2 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:32,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 357 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1280 Invalid, 13 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 11:08:32,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-12-14 11:08:32,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-12-14 11:08:32,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 69 states have (on average 2.0434782608695654) internal successors, (141), 132 states have internal predecessors, (141), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:08:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2022-12-14 11:08:32,124 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 23 [2022-12-14 11:08:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:32,124 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2022-12-14 11:08:32,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:08:32,125 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2022-12-14 11:08:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 11:08:32,125 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:32,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:32,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:08:32,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:08:32,327 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:32,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1619201307, now seen corresponding path program 1 times [2022-12-14 11:08:32,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:32,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381381535] [2022-12-14 11:08:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:32,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 11:08:32,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381381535] [2022-12-14 11:08:32,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381381535] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917988663] [2022-12-14 11:08:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:32,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:08:32,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:32,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:08:32,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:08:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:32,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:08:32,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:08:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 11:08:32,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:08:32,505 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 11:08:32,505 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 12 treesize of output 11 [2022-12-14 11:08:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 11:08:32,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917988663] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:08:32,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [112298719] [2022-12-14 11:08:32,520 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 11:08:32,520 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:08:32,520 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:08:32,520 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:08:32,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:08:32,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,538 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 [2022-12-14 11:08:32,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:32,567 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 [2022-12-14 11:08:32,570 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 [2022-12-14 11:08:32,574 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 [2022-12-14 11:08:32,578 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 [2022-12-14 11:08:32,582 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 [2022-12-14 11:08:32,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:32,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:32,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:32,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,605 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 36 treesize of output 23 [2022-12-14 11:08:32,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,612 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 36 treesize of output 23 [2022-12-14 11:08:32,617 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 [2022-12-14 11:08:32,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:32,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:32,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:32,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,727 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:32,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:32,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:32,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:32,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:32,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:32,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:32,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,813 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:32,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:32,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:32,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:32,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:32,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:32,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:32,904 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 21 [2022-12-14 11:08:32,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:08:32,925 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 11 [2022-12-14 11:08:32,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:32,955 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 [2022-12-14 11:08:32,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:32,977 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:08:32,977 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 28 treesize of output 34 [2022-12-14 11:08:32,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:33,001 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:08:33,001 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 28 treesize of output 30 [2022-12-14 11:08:33,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:33,035 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 [2022-12-14 11:08:33,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:33,054 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:08:33,054 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 28 treesize of output 30 [2022-12-14 11:08:33,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:33,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:33,074 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:08:33,074 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 28 treesize of output 34 [2022-12-14 11:08:33,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:33,144 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:33,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:33,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:33,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:33,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:33,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:33,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:33,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:33,215 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:33,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:33,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:33,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:33,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:33,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:33,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:33,316 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 21 [2022-12-14 11:08:33,324 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 11 [2022-12-14 11:08:33,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:08:33,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:33,367 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:33,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:33,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:33,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:33,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:33,393 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 94 for LOIs [2022-12-14 11:08:33,658 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:08:37,565 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3077#(and (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= |#NULL.offset| 0) (not (= (select |#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:08:37,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:08:37,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:08:37,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2022-12-14 11:08:37,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732360886] [2022-12-14 11:08:37,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:08:37,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:08:37,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:37,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:08:37,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=321, Unknown=1, NotChecked=0, Total=380 [2022-12-14 11:08:37,566 INFO L87 Difference]: Start difference. First operand 139 states and 149 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:08:37,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:37,714 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2022-12-14 11:08:37,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:08:37,715 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-12-14 11:08:37,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:37,715 INFO L225 Difference]: With dead ends: 144 [2022-12-14 11:08:37,715 INFO L226 Difference]: Without dead ends: 144 [2022-12-14 11:08:37,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=72, Invalid=389, Unknown=1, NotChecked=0, Total=462 [2022-12-14 11:08:37,716 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 8 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:37,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 235 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:08:37,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-12-14 11:08:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2022-12-14 11:08:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 135 states have internal predecessors, (146), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:08:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 154 transitions. [2022-12-14 11:08:37,719 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 154 transitions. Word has length 24 [2022-12-14 11:08:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:37,719 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 154 transitions. [2022-12-14 11:08:37,719 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:08:37,719 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 154 transitions. [2022-12-14 11:08:37,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 11:08:37,720 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:37,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:37,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 11:08:37,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 11:08:37,920 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:37,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1619201306, now seen corresponding path program 1 times [2022-12-14 11:08:37,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:37,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317830430] [2022-12-14 11:08:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:37,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:08:38,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:38,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317830430] [2022-12-14 11:08:38,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317830430] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:38,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070870239] [2022-12-14 11:08:38,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:38,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:08:38,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:38,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:08:38,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:08:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:38,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 11:08:38,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:08:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:08:38,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:08:38,203 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:08:38,203 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 20 treesize of output 24 [2022-12-14 11:08:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:08:38,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070870239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:08:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [458240731] [2022-12-14 11:08:38,275 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 11:08:38,275 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:08:38,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:08:38,275 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:08:38,275 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:08:38,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,286 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 [2022-12-14 11:08:38,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:38,314 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 [2022-12-14 11:08:38,317 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 [2022-12-14 11:08:38,322 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 [2022-12-14 11:08:38,325 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 [2022-12-14 11:08:38,328 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 [2022-12-14 11:08:38,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:38,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:38,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:38,346 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 [2022-12-14 11:08:38,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,351 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 36 treesize of output 23 [2022-12-14 11:08:38,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,356 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 36 treesize of output 23 [2022-12-14 11:08:38,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:38,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:38,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:38,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,449 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:38,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:38,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:38,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:38,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:38,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:38,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:38,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,518 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:38,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:38,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:38,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:38,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:38,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:38,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:38,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:38,640 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-12-14 11:08:38,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:38,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:38,654 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-12-14 11:08:38,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:38,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:38,665 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-12-14 11:08:38,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,732 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 260 treesize of output 238 [2022-12-14 11:08:38,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:38,749 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 11:08:38,750 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 1 case distinctions, treesize of input 261 treesize of output 257 [2022-12-14 11:08:38,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:38,771 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 11:08:38,771 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 1 case distinctions, treesize of input 261 treesize of output 261 [2022-12-14 11:08:38,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,865 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 260 treesize of output 238 [2022-12-14 11:08:38,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:38,883 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 11:08:38,883 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 1 case distinctions, treesize of input 261 treesize of output 257 [2022-12-14 11:08:38,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:38,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:38,904 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 11:08:38,904 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 1 case distinctions, treesize of input 261 treesize of output 261 [2022-12-14 11:08:39,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:39,047 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:39,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:39,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:39,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:39,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:39,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:39,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:39,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:39,118 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:39,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:39,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:39,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:39,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:39,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:39,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:39,231 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 15 treesize of output 1 [2022-12-14 11:08:39,237 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 11 treesize of output 7 [2022-12-14 11:08:39,241 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 11 treesize of output 7 [2022-12-14 11:08:39,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:39,260 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:39,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:39,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:39,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:39,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:39,283 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 94 for LOIs [2022-12-14 11:08:39,541 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:08:43,750 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3535#(and (< (select |#length| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:08:43,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:08:43,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:08:43,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-12-14 11:08:43,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090723431] [2022-12-14 11:08:43,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:08:43,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 11:08:43,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:43,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 11:08:43,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=812, Unknown=1, NotChecked=0, Total=930 [2022-12-14 11:08:43,751 INFO L87 Difference]: Start difference. First operand 142 states and 154 transitions. Second operand has 15 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 13 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 11:08:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:43,992 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2022-12-14 11:08:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:08:43,993 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 13 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 24 [2022-12-14 11:08:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:43,993 INFO L225 Difference]: With dead ends: 147 [2022-12-14 11:08:43,993 INFO L226 Difference]: Without dead ends: 147 [2022-12-14 11:08:43,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=135, Invalid=920, Unknown=1, NotChecked=0, Total=1056 [2022-12-14 11:08:43,994 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 16 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:43,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1083 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:08:43,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-14 11:08:43,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2022-12-14 11:08:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 72 states have (on average 2.013888888888889) internal successors, (145), 135 states have internal predecessors, (145), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:08:43,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2022-12-14 11:08:43,997 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 24 [2022-12-14 11:08:43,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:43,997 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2022-12-14 11:08:43,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 13 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 11:08:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2022-12-14 11:08:43,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 11:08:43,997 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:43,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:44,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 11:08:44,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 11:08:44,199 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:44,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:44,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1344367040, now seen corresponding path program 1 times [2022-12-14 11:08:44,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:44,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141703607] [2022-12-14 11:08:44,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:44,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:08:44,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:44,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141703607] [2022-12-14 11:08:44,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141703607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:44,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:44,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:08:44,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588466591] [2022-12-14 11:08:44,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:44,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:08:44,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:44,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:08:44,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:08:44,310 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:08:44,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:44,477 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2022-12-14 11:08:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:08:44,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-12-14 11:08:44,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:44,477 INFO L225 Difference]: With dead ends: 142 [2022-12-14 11:08:44,478 INFO L226 Difference]: Without dead ends: 142 [2022-12-14 11:08:44,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:08:44,478 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 19 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:44,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 395 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:08:44,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-12-14 11:08:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2022-12-14 11:08:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 72 states have (on average 2.0) internal successors, (144), 134 states have internal predecessors, (144), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:08:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2022-12-14 11:08:44,481 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 25 [2022-12-14 11:08:44,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:44,481 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2022-12-14 11:08:44,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:08:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2022-12-14 11:08:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 11:08:44,482 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:44,482 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:44,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 11:08:44,482 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:44,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:44,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1344367041, now seen corresponding path program 1 times [2022-12-14 11:08:44,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:44,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074936722] [2022-12-14 11:08:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:44,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:08:44,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:44,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074936722] [2022-12-14 11:08:44,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074936722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:44,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:44,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:08:44,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656621247] [2022-12-14 11:08:44,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:44,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:08:44,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:08:44,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:08:44,623 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:08:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:44,780 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2022-12-14 11:08:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:08:44,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-12-14 11:08:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:44,781 INFO L225 Difference]: With dead ends: 140 [2022-12-14 11:08:44,781 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 11:08:44,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:08:44,782 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 15 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:44,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 425 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:08:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 11:08:44,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-12-14 11:08:44,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 133 states have internal predecessors, (143), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:08:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2022-12-14 11:08:44,786 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 25 [2022-12-14 11:08:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:44,786 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2022-12-14 11:08:44,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:08:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2022-12-14 11:08:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 11:08:44,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:44,787 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:44,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 11:08:44,788 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:44,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1494901528, now seen corresponding path program 1 times [2022-12-14 11:08:44,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:44,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454356318] [2022-12-14 11:08:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:44,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 11:08:45,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:45,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454356318] [2022-12-14 11:08:45,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454356318] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:45,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998209230] [2022-12-14 11:08:45,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:45,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:08:45,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:45,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:08:45,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:08:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:45,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 11:08:45,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:08:45,275 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 [2022-12-14 11:08:45,290 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 5 treesize of output 3 [2022-12-14 11:08:45,295 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_944 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_944))) is different from true [2022-12-14 11:08:45,302 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_944 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_944))) is different from true [2022-12-14 11:08:45,312 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:08:45,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-12-14 11:08:45,355 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 9 treesize of output 7 [2022-12-14 11:08:45,362 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_945 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_945))))) is different from true [2022-12-14 11:08:45,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 11:08:45,423 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true [2022-12-14 11:08:45,436 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:08:45,436 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 [2022-12-14 11:08:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 15 not checked. [2022-12-14 11:08:45,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:08:45,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998209230] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:45,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1773430785] [2022-12-14 11:08:45,613 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 11:08:45,613 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:08:45,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:08:45,613 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:08:45,613 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:08:45,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,629 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 [2022-12-14 11:08:45,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:45,659 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 [2022-12-14 11:08:45,663 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 [2022-12-14 11:08:45,669 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 [2022-12-14 11:08:45,673 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 [2022-12-14 11:08:45,676 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 [2022-12-14 11:08:45,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:45,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:45,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:45,698 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 [2022-12-14 11:08:45,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,704 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 36 treesize of output 23 [2022-12-14 11:08:45,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,711 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 36 treesize of output 23 [2022-12-14 11:08:45,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:45,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:45,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:45,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:45,878 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:45,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:46,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:08:46,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:08:46,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:08:46,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:08:46,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:46,049 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:46,051 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:46,052 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:46,113 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:46,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:46,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:46,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:46,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:46,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:46,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:46,271 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:46,273 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:46,274 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:46,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,351 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-12-14 11:08:46,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,363 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-12-14 11:08:46,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,375 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-12-14 11:08:46,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 238 [2022-12-14 11:08:46,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,473 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 11:08:46,474 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 1 case distinctions, treesize of input 261 treesize of output 261 [2022-12-14 11:08:46,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,491 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 11:08:46,492 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 1 case distinctions, treesize of input 249 treesize of output 245 [2022-12-14 11:08:46,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,589 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 260 treesize of output 238 [2022-12-14 11:08:46,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,608 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 11:08:46,608 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 1 case distinctions, treesize of input 261 treesize of output 261 [2022-12-14 11:08:46,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,627 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 11:08:46,627 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 1 case distinctions, treesize of input 249 treesize of output 245 [2022-12-14 11:08:46,735 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 11 treesize of output 7 [2022-12-14 11:08:46,740 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 11 treesize of output 7 [2022-12-14 11:08:46,744 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 15 treesize of output 1 [2022-12-14 11:08:46,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:46,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,784 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 21 treesize of output 20 [2022-12-14 11:08:46,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,797 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 21 treesize of output 20 [2022-12-14 11:08:46,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,867 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:46,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:46,881 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:08:46,881 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 15 treesize of output 19 [2022-12-14 11:08:46,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,900 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:46,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:46,917 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:46,917 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 7 [2022-12-14 11:08:46,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:46,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:46,995 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:46,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:47,007 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:47,007 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 7 [2022-12-14 11:08:47,019 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:08:47,019 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 15 treesize of output 19 [2022-12-14 11:08:47,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:47,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:47,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:47,036 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:47,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:47,170 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:47,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:47,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:47,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:47,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:47,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:47,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:47,301 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:47,302 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:47,303 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:47,350 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:47,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:47,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:47,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:47,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:47,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:47,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:47,503 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:47,505 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:47,505 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:08:47,556 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 15 treesize of output 1 [2022-12-14 11:08:47,560 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 11 treesize of output 7 [2022-12-14 11:08:47,565 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 11 treesize of output 7 [2022-12-14 11:08:47,604 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:08:47,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:08:47,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:47,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:47,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:47,682 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-12-14 11:08:47,686 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 [2022-12-14 11:08:47,689 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 [2022-12-14 11:08:47,695 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 [2022-12-14 11:08:47,698 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 [2022-12-14 11:08:47,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:08:47,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:47,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:47,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:47,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:47,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:47,728 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 [2022-12-14 11:08:47,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:47,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:47,735 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 36 treesize of output 23 [2022-12-14 11:08:47,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:47,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:47,743 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 36 treesize of output 23 [2022-12-14 11:08:47,745 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:08:51,363 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4605#(and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 0) 0) (= |ULTIMATE.start_dll_circular_insert_~head#1.base| |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 0) 0) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_insert_#in~data#1| |ULTIMATE.start_dll_circular_insert_~data#1|) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (not (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| 0)) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 4) 0) (= |ULTIMATE.start_dll_circular_insert_#in~data#1| |ULTIMATE.start_main_~data~0#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 4) 0) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| 0) (= |ULTIMATE.start_dll_circular_insert_~index#1| |ULTIMATE.start_dll_circular_insert_#in~index#1|) (= (select |#length| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 12) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (< |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_dll_circular_insert_~head#1.offset| |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (not (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~head#1.base|))) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (= |ULTIMATE.start_dll_circular_insert_~data#1| (select (select |#memory_int| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 8)) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= (ite (and (not (= (mod |ULTIMATE.start_main_~len~0#1| 2) 0)) (< |ULTIMATE.start_main_~len~0#1| 0)) (+ (div |ULTIMATE.start_main_~len~0#1| 2) 1) (div |ULTIMATE.start_main_~len~0#1| 2)) |ULTIMATE.start_dll_circular_insert_#in~index#1|) (= |#NULL.base| 0))' at error location [2022-12-14 11:08:51,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:08:51,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:08:51,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2022-12-14 11:08:51,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593088338] [2022-12-14 11:08:51,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:08:51,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 11:08:51,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:51,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 11:08:51,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1199, Unknown=4, NotChecked=292, Total=1640 [2022-12-14 11:08:51,365 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand has 18 states, 13 states have (on average 3.923076923076923) internal successors, (51), 15 states have internal predecessors, (51), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 11:08:51,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:51,707 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2022-12-14 11:08:51,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:08:51,707 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 3.923076923076923) internal successors, (51), 15 states have internal predecessors, (51), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 34 [2022-12-14 11:08:51,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:51,708 INFO L225 Difference]: With dead ends: 147 [2022-12-14 11:08:51,708 INFO L226 Difference]: Without dead ends: 147 [2022-12-14 11:08:51,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=172, Invalid=1400, Unknown=4, NotChecked=316, Total=1892 [2022-12-14 11:08:51,709 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 204 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 557 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:51,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 308 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 538 Invalid, 0 Unknown, 557 Unchecked, 0.3s Time] [2022-12-14 11:08:51,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-14 11:08:51,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2022-12-14 11:08:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 72 states have (on average 1.8472222222222223) internal successors, (133), 123 states have internal predecessors, (133), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:08:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2022-12-14 11:08:51,711 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 34 [2022-12-14 11:08:51,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:51,711 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2022-12-14 11:08:51,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 3.923076923076923) internal successors, (51), 15 states have internal predecessors, (51), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 11:08:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2022-12-14 11:08:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 11:08:51,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:51,712 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:51,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 11:08:51,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 11:08:51,913 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:51,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:51,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1494901529, now seen corresponding path program 1 times [2022-12-14 11:08:51,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:51,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167727878] [2022-12-14 11:08:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:51,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 11:08:52,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:52,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167727878] [2022-12-14 11:08:52,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167727878] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:52,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993125135] [2022-12-14 11:08:52,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:52,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:08:52,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:52,340 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:08:52,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 11:08:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:52,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 11:08:52,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:08:52,491 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 [2022-12-14 11:08:52,512 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 5 treesize of output 3 [2022-12-14 11:08:52,517 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_1124 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1124) |c_#length|)) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-12-14 11:08:52,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,540 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 [2022-12-14 11:08:52,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:08:52,560 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1125 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1125) |c_#length|)))) is different from true [2022-12-14 11:08:52,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,581 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 [2022-12-14 11:08:52,636 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 5 treesize of output 3 [2022-12-14 11:08:52,641 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1126 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1126) |c_#length|)))) is different from true [2022-12-14 11:08:52,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,660 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 [2022-12-14 11:08:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 15 not checked. [2022-12-14 11:08:52,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:08:52,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993125135] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:52,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [58658982] [2022-12-14 11:08:52,762 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 11:08:52,763 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:08:52,763 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:08:52,763 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:08:52,763 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:08:52,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,781 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 [2022-12-14 11:08:52,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:52,813 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 [2022-12-14 11:08:52,816 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 [2022-12-14 11:08:52,821 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 [2022-12-14 11:08:52,825 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 [2022-12-14 11:08:52,828 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 [2022-12-14 11:08:52,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:52,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:52,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:52,851 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 [2022-12-14 11:08:52,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-12-14 11:08:52,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-12-14 11:08:52,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:52,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:52,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:52,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:52,968 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:52,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:52,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:53,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:53,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:53,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:53,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:53,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,047 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:53,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:53,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:53,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:53,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:53,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:53,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:53,141 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 11 [2022-12-14 11:08:53,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:08:53,163 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 21 [2022-12-14 11:08:53,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,192 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 [2022-12-14 11:08:53,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:53,213 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:08:53,213 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 28 treesize of output 34 [2022-12-14 11:08:53,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:53,239 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:08:53,239 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 28 treesize of output 30 [2022-12-14 11:08:53,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:53,283 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:08:53,284 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 28 treesize of output 30 [2022-12-14 11:08:53,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,298 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 [2022-12-14 11:08:53,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:53,322 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:08:53,322 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 28 treesize of output 34 [2022-12-14 11:08:53,370 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 11 treesize of output 7 [2022-12-14 11:08:53,378 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 15 treesize of output 1 [2022-12-14 11:08:53,386 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 11 treesize of output 7 [2022-12-14 11:08:53,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,413 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 21 treesize of output 20 [2022-12-14 11:08:53,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,435 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 21 treesize of output 20 [2022-12-14 11:08:53,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:53,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:53,544 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:53,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:53,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:53,564 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:53,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:53,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:08:53,582 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 15 treesize of output 19 [2022-12-14 11:08:53,605 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:53,605 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 7 [2022-12-14 11:08:53,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:53,684 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:53,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:53,704 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:53,704 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 7 [2022-12-14 11:08:53,719 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:08:53,719 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 15 treesize of output 19 [2022-12-14 11:08:53,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:53,740 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:53,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:53,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,792 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:53,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:53,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:53,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:53,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:53,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:53,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:53,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:53,872 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:53,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:53,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:53,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:53,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:53,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:53,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:53,983 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 11 [2022-12-14 11:08:53,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:08:54,001 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 21 [2022-12-14 11:08:54,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:54,022 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:54,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:54,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:54,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:54,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:54,048 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-12-14 11:08:54,052 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 [2022-12-14 11:08:54,056 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 [2022-12-14 11:08:54,063 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 [2022-12-14 11:08:54,067 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 [2022-12-14 11:08:54,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:08:54,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:54,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:54,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:54,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:54,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:54,096 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 [2022-12-14 11:08:54,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:54,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:54,102 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 36 treesize of output 23 [2022-12-14 11:08:54,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:54,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:54,110 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 36 treesize of output 23 [2022-12-14 11:08:54,112 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:08:56,491 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5036#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (< (select |#length| |ULTIMATE.start_dll_circular_insert_~head#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~head#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| 0) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:08:56,491 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:08:56,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:08:56,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2022-12-14 11:08:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273029324] [2022-12-14 11:08:56,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:08:56,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 11:08:56,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:56,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 11:08:56,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1141, Unknown=3, NotChecked=210, Total=1482 [2022-12-14 11:08:56,493 INFO L87 Difference]: Start difference. First operand 130 states and 141 transitions. Second operand has 18 states, 12 states have (on average 4.25) internal successors, (51), 15 states have internal predecessors, (51), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:08:56,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:56,819 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2022-12-14 11:08:56,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:08:56,819 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 4.25) internal successors, (51), 15 states have internal predecessors, (51), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 34 [2022-12-14 11:08:56,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:56,820 INFO L225 Difference]: With dead ends: 137 [2022-12-14 11:08:56,820 INFO L226 Difference]: Without dead ends: 137 [2022-12-14 11:08:56,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=156, Invalid=1335, Unknown=3, NotChecked=228, Total=1722 [2022-12-14 11:08:56,820 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 357 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:56,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 203 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 397 Invalid, 0 Unknown, 384 Unchecked, 0.3s Time] [2022-12-14 11:08:56,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-12-14 11:08:56,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 120. [2022-12-14 11:08:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 72 states have (on average 1.7083333333333333) internal successors, (123), 113 states have internal predecessors, (123), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:08:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2022-12-14 11:08:56,823 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 34 [2022-12-14 11:08:56,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:56,823 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2022-12-14 11:08:56,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 4.25) internal successors, (51), 15 states have internal predecessors, (51), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:08:56,823 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2022-12-14 11:08:56,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 11:08:56,823 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:56,823 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:56,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 11:08:57,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 11:08:57,025 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:57,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1762784456, now seen corresponding path program 1 times [2022-12-14 11:08:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:57,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797251719] [2022-12-14 11:08:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:08:57,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:57,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797251719] [2022-12-14 11:08:57,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797251719] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:57,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:57,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:08:57,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044915498] [2022-12-14 11:08:57,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:57,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:08:57,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:57,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:08:57,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:08:57,093 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:08:57,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:57,124 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-12-14 11:08:57,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:08:57,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2022-12-14 11:08:57,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:57,125 INFO L225 Difference]: With dead ends: 108 [2022-12-14 11:08:57,125 INFO L226 Difference]: Without dead ends: 108 [2022-12-14 11:08:57,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:08:57,126 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 182 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:57,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 103 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:08:57,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-12-14 11:08:57,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-12-14 11:08:57,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 65 states have (on average 1.676923076923077) internal successors, (109), 102 states have internal predecessors, (109), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:08:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2022-12-14 11:08:57,129 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 34 [2022-12-14 11:08:57,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:57,129 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2022-12-14 11:08:57,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:08:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2022-12-14 11:08:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 11:08:57,130 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:57,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:57,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 11:08:57,130 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:08:57,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:57,131 INFO L85 PathProgramCache]: Analyzing trace with hash 2081486467, now seen corresponding path program 1 times [2022-12-14 11:08:57,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:57,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706287194] [2022-12-14 11:08:57,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:57,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:08:57,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:57,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706287194] [2022-12-14 11:08:57,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706287194] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:57,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730376103] [2022-12-14 11:08:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:57,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:08:57,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:57,619 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:08:57,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 11:08:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:57,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-14 11:08:57,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:08:57,757 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 [2022-12-14 11:08:57,870 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 9 treesize of output 5 [2022-12-14 11:08:57,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:57,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 11:08:57,988 INFO L321 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2022-12-14 11:08:57,989 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 18 treesize of output 13 [2022-12-14 11:08:58,025 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 17 treesize of output 9 [2022-12-14 11:08:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:08:58,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:08:58,077 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_node_create_~temp~0#1.base_56| Int) (v_ArrVal_1392 (Array Int Int))) (or (not (< |v_node_create_~temp~0#1.base_56| |c_#StackHeapBarrier|)) (= (select (store |c_#valid| |v_node_create_~temp~0#1.base_56| 1) (select (select (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_56| v_ArrVal_1392) |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|)) 1))) is different from false [2022-12-14 11:08:58,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730376103] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:08:58,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [270992149] [2022-12-14 11:08:58,079 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-12-14 11:08:58,079 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:08:58,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:08:58,080 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:08:58,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:08:58,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,093 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 [2022-12-14 11:08:58,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:58,120 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 [2022-12-14 11:08:58,123 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 [2022-12-14 11:08:58,127 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 [2022-12-14 11:08:58,130 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 [2022-12-14 11:08:58,133 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 [2022-12-14 11:08:58,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:58,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:58,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:58,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,154 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 36 treesize of output 23 [2022-12-14 11:08:58,158 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 [2022-12-14 11:08:58,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,163 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 36 treesize of output 23 [2022-12-14 11:08:58,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:58,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:58,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:08:58,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,260 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:58,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:58,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:58,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:58,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:58,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:58,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:58,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,327 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:58,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:58,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:58,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:58,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:58,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:58,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:58,415 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 11 [2022-12-14 11:08:58,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:08:58,432 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 21 [2022-12-14 11:08:58,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:58,465 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:08:58,465 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 28 treesize of output 30 [2022-12-14 11:08:58,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,476 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 [2022-12-14 11:08:58,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:58,498 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:08:58,498 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 28 treesize of output 34 [2022-12-14 11:08:58,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:58,541 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:08:58,542 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 28 treesize of output 30 [2022-12-14 11:08:58,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,552 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 [2022-12-14 11:08:58,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:58,568 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:08:58,568 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 28 treesize of output 34 [2022-12-14 11:08:58,615 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 11 treesize of output 7 [2022-12-14 11:08:58,619 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 11 treesize of output 7 [2022-12-14 11:08:58,625 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 15 treesize of output 1 [2022-12-14 11:08:58,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,653 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 21 treesize of output 20 [2022-12-14 11:08:58,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,664 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 21 treesize of output 20 [2022-12-14 11:08:58,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:58,808 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:58,809 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 7 [2022-12-14 11:08:58,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:58,821 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:58,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:58,841 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:08:58,841 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 15 treesize of output 19 [2022-12-14 11:08:58,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:58,857 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:58,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:58,935 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:08:58,935 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 15 treesize of output 19 [2022-12-14 11:08:58,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:58,961 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:58,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:58,973 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:58,973 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 7 [2022-12-14 11:08:58,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:58,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:08:58,992 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:08:58,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:08:59,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:59,060 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:59,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:59,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:59,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:59,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:59,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:59,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:59,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:59,129 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:59,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:59,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:08:59,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:59,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:08:59,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:59,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:08:59,255 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 11 treesize of output 7 [2022-12-14 11:08:59,260 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 15 treesize of output 1 [2022-12-14 11:08:59,265 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 11 treesize of output 7 [2022-12-14 11:08:59,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:59,286 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:08:59,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:08:59,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:59,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:59,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:08:59,315 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 18 for LOIs [2022-12-14 11:08:59,320 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 [2022-12-14 11:08:59,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:08:59,332 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 [2022-12-14 11:08:59,336 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 [2022-12-14 11:08:59,339 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 [2022-12-14 11:08:59,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:59,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:59,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:59,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:08:59,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:08:59,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:59,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:59,373 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 36 treesize of output 23 [2022-12-14 11:08:59,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:08:59,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:59,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:08:59,385 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 36 treesize of output 23 [2022-12-14 11:08:59,388 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:09:02,432 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5682#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (= |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|)) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_dll_circular_insert_~last~1#1.base| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (< 0 |ULTIMATE.start_dll_circular_insert_~index#1|) (<= (+ |ULTIMATE.start_dll_circular_insert_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (not (= (select |#valid| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) 1)) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|) |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (= |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:09:02,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:09:02,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:09:02,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2022-12-14 11:09:02,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924229197] [2022-12-14 11:09:02,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:09:02,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 11:09:02,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:09:02,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 11:09:02,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1781, Unknown=3, NotChecked=86, Total=2070 [2022-12-14 11:09:02,434 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand has 23 states, 17 states have (on average 2.764705882352941) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 11:09:03,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:09:03,074 INFO L93 Difference]: Finished difference Result 203 states and 218 transitions. [2022-12-14 11:09:03,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 11:09:03,075 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 2.764705882352941) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 36 [2022-12-14 11:09:03,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:09:03,076 INFO L225 Difference]: With dead ends: 203 [2022-12-14 11:09:03,076 INFO L226 Difference]: Without dead ends: 203 [2022-12-14 11:09:03,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=269, Invalid=2282, Unknown=3, NotChecked=98, Total=2652 [2022-12-14 11:09:03,077 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 887 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:09:03,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 372 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 752 Invalid, 1 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:09:03,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-12-14 11:09:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 115. [2022-12-14 11:09:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 72 states have (on average 1.75) internal successors, (126), 109 states have internal predecessors, (126), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:09:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2022-12-14 11:09:03,080 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 36 [2022-12-14 11:09:03,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:09:03,080 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2022-12-14 11:09:03,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 2.764705882352941) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 11:09:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2022-12-14 11:09:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 11:09:03,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:09:03,080 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:09:03,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 11:09:03,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 11:09:03,282 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:09:03,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:09:03,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2081486468, now seen corresponding path program 1 times [2022-12-14 11:09:03,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:09:03,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607237733] [2022-12-14 11:09:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:03,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:09:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:09:04,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:04,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607237733] [2022-12-14 11:09:04,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607237733] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:09:04,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754183466] [2022-12-14 11:09:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:04,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:09:04,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:09:04,327 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:09:04,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 11:09:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:04,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-14 11:09:04,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:09:04,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-12-14 11:09:04,683 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 19 treesize of output 11 [2022-12-14 11:09:04,779 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int) (v_ArrVal_1571 (Array Int Int)) (v_ArrVal_1570 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1570)) (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1571)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-12-14 11:09:04,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:04,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-12-14 11:09:04,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:04,799 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 24 treesize of output 19 [2022-12-14 11:09:04,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:04,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-12-14 11:09:04,811 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 11:09:04,811 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 15 treesize of output 15 [2022-12-14 11:09:04,840 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 23 treesize of output 15 [2022-12-14 11:09:04,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-14 11:09:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 1 not checked. [2022-12-14 11:09:04,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:09:05,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754183466] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:09:05,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [532083355] [2022-12-14 11:09:05,805 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-12-14 11:09:05,805 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:09:05,805 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:09:05,806 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:09:05,806 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:09:05,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,822 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 [2022-12-14 11:09:05,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:09:05,850 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 [2022-12-14 11:09:05,852 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 [2022-12-14 11:09:05,857 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 [2022-12-14 11:09:05,861 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 [2022-12-14 11:09:05,864 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 [2022-12-14 11:09:05,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:09:05,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:05,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:05,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-12-14 11:09:05,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,892 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 36 treesize of output 23 [2022-12-14 11:09:05,897 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 [2022-12-14 11:09:05,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:09:05,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:09:05,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:05,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:09:06,036 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:09:06,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:09:06,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:09:06,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:09:06,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:09:06,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:06,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:09:06,143 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:06,145 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:06,146 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:06,146 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:06,193 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:09:06,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:09:06,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:06,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:06,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:06,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:09:06,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:06,301 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:06,302 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:06,303 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:06,335 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 11 [2022-12-14 11:09:06,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:09:06,350 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 21 [2022-12-14 11:09:06,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:06,382 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:09:06,382 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 28 treesize of output 30 [2022-12-14 11:09:06,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,393 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 [2022-12-14 11:09:06,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:06,417 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:09:06,418 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 28 treesize of output 34 [2022-12-14 11:09:06,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:06,461 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:09:06,461 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 28 treesize of output 30 [2022-12-14 11:09:06,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:06,479 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:09:06,479 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 28 treesize of output 34 [2022-12-14 11:09:06,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,488 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 [2022-12-14 11:09:06,532 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 11 treesize of output 7 [2022-12-14 11:09:06,538 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 11 treesize of output 7 [2022-12-14 11:09:06,542 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 15 treesize of output 1 [2022-12-14 11:09:06,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:09:06,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,576 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 21 treesize of output 20 [2022-12-14 11:09:06,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,592 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 21 treesize of output 20 [2022-12-14 11:09:06,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:06,718 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:06,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:06,733 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:09:06,733 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 15 treesize of output 19 [2022-12-14 11:09:06,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:06,753 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:06,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:06,767 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:06,767 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 7 [2022-12-14 11:09:06,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:09:06,845 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 15 treesize of output 19 [2022-12-14 11:09:06,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:06,871 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:06,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:06,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:06,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:06,887 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:06,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:06,901 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:06,901 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 7 [2022-12-14 11:09:07,056 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:09:07,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:09:07,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:09:07,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:07,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:09:07,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:07,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:09:07,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:09:07,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:07,203 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:07,204 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:07,205 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:07,206 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:07,261 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:09:07,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:09:07,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:07,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:07,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:07,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:07,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:09:07,406 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:07,407 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:07,409 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:09:07,480 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 15 treesize of output 1 [2022-12-14 11:09:07,484 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 11 treesize of output 7 [2022-12-14 11:09:07,488 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 11 treesize of output 7 [2022-12-14 11:09:07,526 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:09:07,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:09:07,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:07,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:07,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:09:07,647 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 65 for LOIs [2022-12-14 11:09:07,665 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 [2022-12-14 11:09:07,670 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 [2022-12-14 11:09:07,713 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 [2022-12-14 11:09:07,719 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 [2022-12-14 11:09:07,728 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 [2022-12-14 11:09:07,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:07,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:07,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:07,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:07,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:09:07,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:07,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:07,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-12-14 11:09:07,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:07,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:07,825 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 36 treesize of output 23 [2022-12-14 11:09:07,847 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 [2022-12-14 11:09:07,850 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:09:12,915 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6183#(and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 0) 0) (= |ULTIMATE.start_dll_circular_insert_~head#1.base| |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 0) 0) (= |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|)) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_#in~data#1| |ULTIMATE.start_dll_circular_insert_~data#1|) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (not (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| 0)) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 4) 0) (= |ULTIMATE.start_dll_circular_insert_#in~data#1| |ULTIMATE.start_main_~data~0#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 4) 0) (= |ULTIMATE.start_dll_circular_insert_~last~1#1.base| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (< 0 |ULTIMATE.start_dll_circular_insert_~index#1|) (= |ULTIMATE.start_dll_circular_insert_~index#1| |ULTIMATE.start_dll_circular_insert_#in~index#1|) (<= (+ |ULTIMATE.start_dll_circular_insert_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (= (select |#length| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 12) (or (not (<= 0 |ULTIMATE.start_dll_circular_insert_~last~1#1.offset|)) (not (<= (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) (select |#length| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|)))) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (< |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_dll_circular_insert_~head#1.offset| |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|) |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (<= 0 |#NULL.offset|) (= |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (= |ULTIMATE.start_dll_circular_insert_~data#1| (select (select |#memory_int| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 8)) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= (ite (and (not (= (mod |ULTIMATE.start_main_~len~0#1| 2) 0)) (< |ULTIMATE.start_main_~len~0#1| 0)) (+ (div |ULTIMATE.start_main_~len~0#1| 2) 1) (div |ULTIMATE.start_main_~len~0#1| 2)) |ULTIMATE.start_dll_circular_insert_#in~index#1|) (= |#NULL.base| 0))' at error location [2022-12-14 11:09:12,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:09:12,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:09:12,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 25 [2022-12-14 11:09:12,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748235966] [2022-12-14 11:09:12,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:09:12,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 11:09:12,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:09:12,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 11:09:12,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2252, Unknown=1, NotChecked=96, Total=2550 [2022-12-14 11:09:12,917 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 26 states, 19 states have (on average 2.473684210526316) internal successors, (47), 23 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 11:09:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:09:14,048 INFO L93 Difference]: Finished difference Result 184 states and 197 transitions. [2022-12-14 11:09:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 11:09:14,049 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 2.473684210526316) internal successors, (47), 23 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 36 [2022-12-14 11:09:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:09:14,049 INFO L225 Difference]: With dead ends: 184 [2022-12-14 11:09:14,049 INFO L226 Difference]: Without dead ends: 184 [2022-12-14 11:09:14,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=297, Invalid=3246, Unknown=1, NotChecked=116, Total=3660 [2022-12-14 11:09:14,050 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 496 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:09:14,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 585 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1301 Invalid, 0 Unknown, 128 Unchecked, 0.8s Time] [2022-12-14 11:09:14,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-14 11:09:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 115. [2022-12-14 11:09:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 72 states have (on average 1.7222222222222223) internal successors, (124), 109 states have internal predecessors, (124), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:09:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2022-12-14 11:09:14,053 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 36 [2022-12-14 11:09:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:09:14,053 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2022-12-14 11:09:14,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 2.473684210526316) internal successors, (47), 23 states have internal predecessors, (47), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 11:09:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2022-12-14 11:09:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 11:09:14,054 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:09:14,054 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:09:14,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 11:09:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:09:14,256 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:09:14,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:09:14,257 INFO L85 PathProgramCache]: Analyzing trace with hash 101765474, now seen corresponding path program 1 times [2022-12-14 11:09:14,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:09:14,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926513637] [2022-12-14 11:09:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:14,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:09:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 11:09:14,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:14,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926513637] [2022-12-14 11:09:14,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926513637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:09:14,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:09:14,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:09:14,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378749378] [2022-12-14 11:09:14,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:09:14,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:09:14,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:09:14,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:09:14,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:09:14,317 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:09:14,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:09:14,360 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2022-12-14 11:09:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:09:14,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-12-14 11:09:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:09:14,361 INFO L225 Difference]: With dead ends: 149 [2022-12-14 11:09:14,361 INFO L226 Difference]: Without dead ends: 149 [2022-12-14 11:09:14,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:09:14,361 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 68 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:09:14,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 155 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:09:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-14 11:09:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 111. [2022-12-14 11:09:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 68 states have (on average 1.661764705882353) internal successors, (113), 105 states have internal predecessors, (113), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:09:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2022-12-14 11:09:14,365 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 37 [2022-12-14 11:09:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:09:14,366 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2022-12-14 11:09:14,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:09:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2022-12-14 11:09:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 11:09:14,367 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:09:14,367 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:09:14,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 11:09:14,367 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:09:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:09:14,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1146086563, now seen corresponding path program 1 times [2022-12-14 11:09:14,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:09:14,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625314530] [2022-12-14 11:09:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:14,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:09:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 11:09:14,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:14,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625314530] [2022-12-14 11:09:14,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625314530] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:09:14,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:09:14,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:09:14,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214027860] [2022-12-14 11:09:14,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:09:14,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:09:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:09:14,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:09:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:09:14,455 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:09:14,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:09:14,497 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-12-14 11:09:14,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:09:14,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-12-14 11:09:14,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:09:14,498 INFO L225 Difference]: With dead ends: 108 [2022-12-14 11:09:14,499 INFO L226 Difference]: Without dead ends: 108 [2022-12-14 11:09:14,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:09:14,499 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 168 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:09:14,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 130 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:09:14,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-12-14 11:09:14,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-12-14 11:09:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 67 states have (on average 1.626865671641791) internal successors, (109), 102 states have internal predecessors, (109), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:09:14,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2022-12-14 11:09:14,503 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 38 [2022-12-14 11:09:14,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:09:14,503 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2022-12-14 11:09:14,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:09:14,503 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2022-12-14 11:09:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 11:09:14,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:09:14,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:09:14,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 11:09:14,504 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:09:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:09:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash -987194045, now seen corresponding path program 1 times [2022-12-14 11:09:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:09:14,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489115954] [2022-12-14 11:09:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:14,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:09:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 11:09:14,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:14,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489115954] [2022-12-14 11:09:14,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489115954] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:09:14,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:09:14,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:09:14,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548270582] [2022-12-14 11:09:14,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:09:14,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:09:14,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:09:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:09:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:09:14,604 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:09:14,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:09:14,739 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2022-12-14 11:09:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:09:14,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-12-14 11:09:14,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:09:14,740 INFO L225 Difference]: With dead ends: 119 [2022-12-14 11:09:14,740 INFO L226 Difference]: Without dead ends: 119 [2022-12-14 11:09:14,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:09:14,741 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 72 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:09:14,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 186 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:09:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-14 11:09:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 102. [2022-12-14 11:09:14,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.537313432835821) internal successors, (103), 96 states have internal predecessors, (103), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:09:14,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2022-12-14 11:09:14,744 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 39 [2022-12-14 11:09:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:09:14,744 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2022-12-14 11:09:14,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:09:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2022-12-14 11:09:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 11:09:14,745 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:09:14,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:09:14,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 11:09:14,745 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:09:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:09:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash -987194044, now seen corresponding path program 1 times [2022-12-14 11:09:14,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:09:14,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094403643] [2022-12-14 11:09:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:14,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:09:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 11:09:14,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:14,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094403643] [2022-12-14 11:09:14,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094403643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:09:14,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:09:14,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:09:14,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462301699] [2022-12-14 11:09:14,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:09:14,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:09:14,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:09:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:09:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:09:14,839 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:09:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:09:14,875 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2022-12-14 11:09:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:09:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-12-14 11:09:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:09:14,876 INFO L225 Difference]: With dead ends: 101 [2022-12-14 11:09:14,876 INFO L226 Difference]: Without dead ends: 101 [2022-12-14 11:09:14,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:09:14,877 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 82 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:09:14,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 169 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:09:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-12-14 11:09:14,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-12-14 11:09:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 95 states have internal predecessors, (101), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:09:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2022-12-14 11:09:14,880 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 39 [2022-12-14 11:09:14,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:09:14,880 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2022-12-14 11:09:14,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:09:14,880 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2022-12-14 11:09:14,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 11:09:14,881 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:09:14,881 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:09:14,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 11:09:14,881 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:09:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:09:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1168750648, now seen corresponding path program 1 times [2022-12-14 11:09:14,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:09:14,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438088174] [2022-12-14 11:09:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:14,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:09:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 11:09:14,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:14,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438088174] [2022-12-14 11:09:14,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438088174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:09:14,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:09:14,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:09:14,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297716567] [2022-12-14 11:09:14,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:09:14,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:09:14,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:09:14,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:09:14,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:09:14,950 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:09:15,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:09:15,034 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2022-12-14 11:09:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:09:15,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-12-14 11:09:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:09:15,035 INFO L225 Difference]: With dead ends: 153 [2022-12-14 11:09:15,035 INFO L226 Difference]: Without dead ends: 153 [2022-12-14 11:09:15,036 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 [2022-12-14 11:09:15,036 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 143 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:09:15,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 122 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:09:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-14 11:09:15,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 100. [2022-12-14 11:09:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 66 states have (on average 1.5151515151515151) internal successors, (100), 94 states have internal predecessors, (100), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:09:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2022-12-14 11:09:15,039 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 39 [2022-12-14 11:09:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:09:15,043 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2022-12-14 11:09:15,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:09:15,043 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2022-12-14 11:09:15,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 11:09:15,043 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:09:15,043 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:09:15,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 11:09:15,044 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:09:15,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:09:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1168750647, now seen corresponding path program 1 times [2022-12-14 11:09:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:09:15,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666471179] [2022-12-14 11:09:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:15,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:09:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 11:09:15,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:15,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666471179] [2022-12-14 11:09:15,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666471179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:09:15,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:09:15,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:09:15,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534205280] [2022-12-14 11:09:15,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:09:15,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:09:15,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:09:15,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:09:15,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:09:15,144 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:09:15,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:09:15,219 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2022-12-14 11:09:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:09:15,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-12-14 11:09:15,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:09:15,220 INFO L225 Difference]: With dead ends: 99 [2022-12-14 11:09:15,220 INFO L226 Difference]: Without dead ends: 99 [2022-12-14 11:09:15,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:09:15,221 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:09:15,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 111 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:09:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-14 11:09:15,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-12-14 11:09:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 66 states have (on average 1.5) internal successors, (99), 93 states have internal predecessors, (99), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:09:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2022-12-14 11:09:15,222 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 39 [2022-12-14 11:09:15,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:09:15,223 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2022-12-14 11:09:15,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:09:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2022-12-14 11:09:15,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 11:09:15,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:09:15,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:09:15,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 11:09:15,223 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:09:15,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:09:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1871531680, now seen corresponding path program 1 times [2022-12-14 11:09:15,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:09:15,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342032377] [2022-12-14 11:09:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:15,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:09:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 11:09:15,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:15,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342032377] [2022-12-14 11:09:15,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342032377] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:09:15,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:09:15,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:09:15,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337166899] [2022-12-14 11:09:15,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:09:15,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:09:15,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:09:15,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:09:15,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:09:15,366 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:09:15,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:09:15,500 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2022-12-14 11:09:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:09:15,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-12-14 11:09:15,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:09:15,501 INFO L225 Difference]: With dead ends: 93 [2022-12-14 11:09:15,501 INFO L226 Difference]: Without dead ends: 93 [2022-12-14 11:09:15,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:09:15,502 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 66 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:09:15,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 195 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:09:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-14 11:09:15,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-12-14 11:09:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 87 states have internal predecessors, (93), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:09:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2022-12-14 11:09:15,504 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 40 [2022-12-14 11:09:15,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:09:15,505 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2022-12-14 11:09:15,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:09:15,505 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2022-12-14 11:09:15,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 11:09:15,505 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:09:15,505 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:09:15,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 11:09:15,505 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:09:15,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:09:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1049352930, now seen corresponding path program 1 times [2022-12-14 11:09:15,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:09:15,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234775175] [2022-12-14 11:09:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:15,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:09:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:09:16,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:16,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234775175] [2022-12-14 11:09:16,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234775175] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:09:16,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113469252] [2022-12-14 11:09:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:16,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:09:16,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:09:16,996 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:09:16,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 11:09:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:17,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 99 conjunts are in the unsatisfiable core [2022-12-14 11:09:17,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:09:17,192 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 [2022-12-14 11:09:17,321 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:17,322 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 [2022-12-14 11:09:17,408 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 [2022-12-14 11:09:17,489 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:09:17,489 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 26 treesize of output 27 [2022-12-14 11:09:17,620 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:09:17,620 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 28 treesize of output 29 [2022-12-14 11:09:17,679 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 49 treesize of output 36 [2022-12-14 11:09:17,746 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:17,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2022-12-14 11:09:17,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:09:17,753 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 7 treesize of output 3 [2022-12-14 11:09:17,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:17,982 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:09:17,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 43 [2022-12-14 11:09:18,006 INFO L321 Elim1Store]: treesize reduction 76, result has 36.1 percent of original size [2022-12-14 11:09:18,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 52 [2022-12-14 11:09:18,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:09:18,131 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 [2022-12-14 11:09:18,212 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:18,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 33 [2022-12-14 11:09:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:09:18,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:09:18,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113469252] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:09:18,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1841687572] [2022-12-14 11:09:18,642 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-12-14 11:09:18,642 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:09:18,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:09:18,642 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:09:18,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:09:18,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,663 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 [2022-12-14 11:09:18,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:09:18,686 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 [2022-12-14 11:09:18,688 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 [2022-12-14 11:09:18,693 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 [2022-12-14 11:09:18,695 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 [2022-12-14 11:09:18,698 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 [2022-12-14 11:09:18,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:18,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:18,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:09:18,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,717 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 36 treesize of output 23 [2022-12-14 11:09:18,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,722 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 36 treesize of output 23 [2022-12-14 11:09:18,727 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 [2022-12-14 11:09:18,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:09:18,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:09:18,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:09:18,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,814 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:18,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:09:18,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:09:18,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:18,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:18,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:18,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:18,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:18,879 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:18,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:09:18,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:18,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:09:18,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:18,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:18,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:18,966 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 21 [2022-12-14 11:09:18,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:09:18,983 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 11 [2022-12-14 11:09:19,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,009 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 [2022-12-14 11:09:19,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:19,028 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:09:19,029 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 28 treesize of output 30 [2022-12-14 11:09:19,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:19,052 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:09:19,052 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 28 treesize of output 34 [2022-12-14 11:09:19,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:19,091 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:09:19,091 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 28 treesize of output 34 [2022-12-14 11:09:19,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,102 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 [2022-12-14 11:09:19,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:19,122 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:09:19,122 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 28 treesize of output 30 [2022-12-14 11:09:19,164 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 11 treesize of output 7 [2022-12-14 11:09:19,169 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 15 treesize of output 1 [2022-12-14 11:09:19,178 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 11 treesize of output 7 [2022-12-14 11:09:19,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,208 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 21 treesize of output 20 [2022-12-14 11:09:19,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:09:19,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,235 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 21 treesize of output 20 [2022-12-14 11:09:19,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:19,346 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:19,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:19,360 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:19,360 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 7 [2022-12-14 11:09:19,374 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:09:19,375 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 15 treesize of output 19 [2022-12-14 11:09:19,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:19,398 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:19,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:19,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:09:19,473 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 15 treesize of output 19 [2022-12-14 11:09:19,487 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:19,487 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 7 [2022-12-14 11:09:19,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:19,499 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:19,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:19,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:19,517 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:19,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:19,711 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 15 treesize of output 1 [2022-12-14 11:09:19,718 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 11 treesize of output 7 [2022-12-14 11:09:19,725 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 11 treesize of output 7 [2022-12-14 11:09:19,761 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 11:09:19,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-12-14 11:09:19,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:09:19,792 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 11:09:19,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:19,818 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 15 treesize of output 1 [2022-12-14 11:09:19,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,846 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:09:19,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2022-12-14 11:09:19,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,879 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:09:19,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2022-12-14 11:09:19,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,912 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:19,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:09:19,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:19,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:19,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:19,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:19,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:09:19,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:19,988 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:19,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:09:20,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:09:20,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:20,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:20,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:20,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:20,107 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 11 treesize of output 7 [2022-12-14 11:09:20,112 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 11 treesize of output 7 [2022-12-14 11:09:20,116 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 15 treesize of output 1 [2022-12-14 11:09:20,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:20,133 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:20,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:09:20,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:20,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:20,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:09:20,159 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 18 for LOIs [2022-12-14 11:09:20,164 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 [2022-12-14 11:09:20,168 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 [2022-12-14 11:09:20,178 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 [2022-12-14 11:09:20,182 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 [2022-12-14 11:09:20,186 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 [2022-12-14 11:09:20,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:09:20,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:20,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:20,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:20,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:20,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:20,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:20,219 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 36 treesize of output 23 [2022-12-14 11:09:20,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:20,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:20,227 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 36 treesize of output 23 [2022-12-14 11:09:20,232 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 13 treesize of output 9 [2022-12-14 11:09:20,235 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:09:25,752 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8308#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (= (select |#valid| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) 1) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) |ULTIMATE.start_dll_circular_insert_~last~1#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (or (not (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| 0)) (not (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| 0))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (or (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (and (= (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|)) (and (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|))) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (not (= (select |#valid| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) 1)) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (<= (+ |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| 4) (select |#length| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|)) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= (+ 8 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (select |#length| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (<= 0 |#StackHeapBarrier|) (or (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (and (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|))) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:09:25,752 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:09:25,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:09:25,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 42 [2022-12-14 11:09:25,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684336630] [2022-12-14 11:09:25,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:09:25,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 11:09:25,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:09:25,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 11:09:25,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=5222, Unknown=1, NotChecked=0, Total=5550 [2022-12-14 11:09:25,756 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 43 states, 33 states have (on average 2.0) internal successors, (66), 36 states have internal predecessors, (66), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 11:09:28,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:09:28,372 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2022-12-14 11:09:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 11:09:28,372 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 33 states have (on average 2.0) internal successors, (66), 36 states have internal predecessors, (66), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2022-12-14 11:09:28,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:09:28,373 INFO L225 Difference]: With dead ends: 110 [2022-12-14 11:09:28,373 INFO L226 Difference]: Without dead ends: 110 [2022-12-14 11:09:28,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=558, Invalid=7631, Unknown=1, NotChecked=0, Total=8190 [2022-12-14 11:09:28,374 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 317 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 49 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:09:28,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 773 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1830 Invalid, 2 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 11:09:28,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-14 11:09:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 92. [2022-12-14 11:09:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 66 states have (on average 1.393939393939394) internal successors, (92), 86 states have internal predecessors, (92), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:09:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2022-12-14 11:09:28,376 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 42 [2022-12-14 11:09:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:09:28,376 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2022-12-14 11:09:28,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 33 states have (on average 2.0) internal successors, (66), 36 states have internal predecessors, (66), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 11:09:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2022-12-14 11:09:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 11:09:28,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:09:28,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:09:28,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 11:09:28,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 11:09:28,578 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:09:28,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:09:28,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1049352931, now seen corresponding path program 1 times [2022-12-14 11:09:28,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:09:28,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391737465] [2022-12-14 11:09:28,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:28,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:09:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:09:30,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:30,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391737465] [2022-12-14 11:09:30,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391737465] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:09:30,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279377698] [2022-12-14 11:09:30,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:30,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:09:30,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:09:30,397 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:09:30,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 11:09:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:30,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 112 conjunts are in the unsatisfiable core [2022-12-14 11:09:30,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:09:30,621 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 [2022-12-14 11:09:30,879 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:30,880 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 [2022-12-14 11:09:31,001 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 [2022-12-14 11:09:31,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:09:31,122 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:09:31,122 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 51 treesize of output 48 [2022-12-14 11:09:31,129 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 33 treesize of output 33 [2022-12-14 11:09:31,293 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:09:31,293 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 53 treesize of output 50 [2022-12-14 11:09:31,296 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 33 treesize of output 33 [2022-12-14 11:09:31,391 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 72 treesize of output 51 [2022-12-14 11:09:31,396 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 54 treesize of output 41 [2022-12-14 11:09:31,467 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:31,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 40 [2022-12-14 11:09:31,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-14 11:09:31,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:31,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:31,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:31,653 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 48 treesize of output 47 [2022-12-14 11:09:31,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:31,669 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:09:31,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 67 [2022-12-14 11:09:31,679 INFO L321 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2022-12-14 11:09:31,680 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 1 case distinctions, treesize of input 32 treesize of output 39 [2022-12-14 11:09:31,695 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-12-14 11:09:31,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 11:09:31,892 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-12-14 11:09:31,892 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 81 treesize of output 47 [2022-12-14 11:09:31,898 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 11:09:31,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 23 [2022-12-14 11:09:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:09:31,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:09:34,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279377698] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:09:34,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1625426517] [2022-12-14 11:09:34,149 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-12-14 11:09:34,149 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:09:34,149 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:09:34,149 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:09:34,149 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:09:34,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,166 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 [2022-12-14 11:09:34,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:09:34,192 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 [2022-12-14 11:09:34,195 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 [2022-12-14 11:09:34,199 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 [2022-12-14 11:09:34,202 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 [2022-12-14 11:09:34,205 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 [2022-12-14 11:09:34,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:34,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:34,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:09:34,231 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 [2022-12-14 11:09:34,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,236 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 36 treesize of output 23 [2022-12-14 11:09:34,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,242 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 36 treesize of output 23 [2022-12-14 11:09:34,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:09:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:09:34,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:09:34,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,346 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:34,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:09:34,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:34,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:34,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:34,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:34,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:09:34,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,427 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:34,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:09:34,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:34,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:34,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:34,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:34,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:09:34,517 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 21 [2022-12-14 11:09:34,534 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 11 [2022-12-14 11:09:34,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:09:34,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,571 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 [2022-12-14 11:09:34,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:34,595 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:09:34,596 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 28 treesize of output 34 [2022-12-14 11:09:34,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:34,619 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:09:34,619 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 28 treesize of output 30 [2022-12-14 11:09:34,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:34,667 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:09:34,667 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 28 treesize of output 34 [2022-12-14 11:09:34,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:34,687 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:09:34,687 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 28 treesize of output 30 [2022-12-14 11:09:34,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,699 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 [2022-12-14 11:09:34,743 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 15 treesize of output 1 [2022-12-14 11:09:34,749 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 11 treesize of output 7 [2022-12-14 11:09:34,758 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 11 treesize of output 7 [2022-12-14 11:09:34,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:09:34,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,794 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 21 treesize of output 20 [2022-12-14 11:09:34,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,814 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 21 treesize of output 20 [2022-12-14 11:09:34,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:34,911 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:34,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:34,933 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:34,933 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 7 [2022-12-14 11:09:34,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:34,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:34,950 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:34,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:34,967 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:09:34,967 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 15 treesize of output 19 [2022-12-14 11:09:35,035 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:09:35,036 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 15 treesize of output 19 [2022-12-14 11:09:35,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:35,061 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:35,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:35,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:09:35,082 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:35,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:09:35,093 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:35,093 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 7 [2022-12-14 11:09:35,286 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 11 treesize of output 7 [2022-12-14 11:09:35,292 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 11 treesize of output 7 [2022-12-14 11:09:35,298 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 15 treesize of output 1 [2022-12-14 11:09:35,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:09:35,344 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 11:09:35,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-12-14 11:09:35,363 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 11:09:35,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:35,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,402 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:09:35,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2022-12-14 11:09:35,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,430 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:09:35,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2022-12-14 11:09:35,445 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 15 treesize of output 1 [2022-12-14 11:09:35,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,511 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:35,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:09:35,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:35,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:35,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:35,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:09:35,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:35,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,584 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:35,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:09:35,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:35,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:09:35,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:35,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:09:35,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:09:35,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:09:35,687 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 11 [2022-12-14 11:09:35,698 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 21 [2022-12-14 11:09:35,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,716 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:09:35,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:09:35,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:09:35,745 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 18 for LOIs [2022-12-14 11:09:35,754 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 [2022-12-14 11:09:35,757 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 [2022-12-14 11:09:35,768 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 [2022-12-14 11:09:35,771 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 [2022-12-14 11:09:35,774 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 [2022-12-14 11:09:35,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:09:35,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:35,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:09:35,804 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 [2022-12-14 11:09:35,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,812 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 36 treesize of output 23 [2022-12-14 11:09:35,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:35,818 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 36 treesize of output 23 [2022-12-14 11:09:35,820 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:09:41,570 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8776#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|))' at error location [2022-12-14 11:09:41,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:09:41,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:09:41,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 45 [2022-12-14 11:09:41,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75496069] [2022-12-14 11:09:41,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:09:41,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-14 11:09:41,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:09:41,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-14 11:09:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=5239, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 11:09:41,575 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 46 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 37 states have internal predecessors, (68), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 11:09:43,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:09:43,746 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2022-12-14 11:09:43,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 11:09:43,747 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 37 states have internal predecessors, (68), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2022-12-14 11:09:43,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:09:43,747 INFO L225 Difference]: With dead ends: 91 [2022-12-14 11:09:43,747 INFO L226 Difference]: Without dead ends: 91 [2022-12-14 11:09:43,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2392 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=475, Invalid=7715, Unknown=0, NotChecked=0, Total=8190 [2022-12-14 11:09:43,749 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 233 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:09:43,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 743 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1923 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 11:09:43,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-12-14 11:09:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-12-14 11:09:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.378787878787879) internal successors, (91), 85 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:09:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2022-12-14 11:09:43,751 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 42 [2022-12-14 11:09:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:09:43,751 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2022-12-14 11:09:43,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 37 states have internal predecessors, (68), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 11:09:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2022-12-14 11:09:43,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 11:09:43,751 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:09:43,751 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:09:43,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-14 11:09:43,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-14 11:09:43,953 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:09:43,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:09:43,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1793709657, now seen corresponding path program 1 times [2022-12-14 11:09:43,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:09:43,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643101343] [2022-12-14 11:09:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:43,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:09:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:09:45,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:45,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643101343] [2022-12-14 11:09:45,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643101343] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:09:45,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242130602] [2022-12-14 11:09:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:45,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:09:45,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:09:45,693 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:09:45,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 11:09:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:45,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 111 conjunts are in the unsatisfiable core [2022-12-14 11:09:45,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:09:45,883 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 [2022-12-14 11:09:45,891 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 5 treesize of output 3 [2022-12-14 11:09:45,969 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:09:45,969 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 [2022-12-14 11:09:46,066 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 11 treesize of output 7 [2022-12-14 11:09:46,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:46,170 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:09:46,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 22 treesize of output 29 [2022-12-14 11:09:46,294 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 11 treesize of output 7 [2022-12-14 11:09:46,373 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:09:46,373 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 43 treesize of output 40 [2022-12-14 11:09:46,523 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:09:46,523 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 36 treesize of output 35 [2022-12-14 11:09:46,590 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 61 treesize of output 40 [2022-12-14 11:09:46,659 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:09:46,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 25 [2022-12-14 11:09:46,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:46,663 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 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:09:46,666 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 7 treesize of output 3 [2022-12-14 11:09:46,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:46,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:09:46,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:46,849 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:09:46,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 56 [2022-12-14 11:09:46,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:46,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:46,869 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-12-14 11:09:46,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 33 [2022-12-14 11:09:47,045 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 [2022-12-14 11:09:47,285 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:09:47,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 61 [2022-12-14 11:09:47,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-12-14 11:09:47,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:47,358 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 41 treesize of output 37 [2022-12-14 11:09:47,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:09:47,371 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 41 treesize of output 37 [2022-12-14 11:09:47,439 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 33 treesize of output 31 [2022-12-14 11:09:47,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-14 11:09:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:09:47,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:09:47,506 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2907 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_2907) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) 1)) is different from false [2022-12-14 11:09:57,466 INFO L321 Elim1Store]: treesize reduction 5, result has 76.2 percent of original size [2022-12-14 11:09:57,466 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 25 treesize of output 24 [2022-12-14 11:10:02,359 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_33| Int) (v_ArrVal_2907 (Array Int Int)) (v_ArrVal_2917 (Array Int Int)) (v_ArrVal_2906 (Array Int Int)) (v_ArrVal_2916 (Array Int Int)) (v_ArrVal_2904 (Array Int Int))) (or (not (< |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_33| |c_#StackHeapBarrier|)) (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_33| v_ArrVal_2917))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (= (select (select (store (store (store .cse0 .cse1 v_ArrVal_2904) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_33| v_ArrVal_2906) (select (select .cse0 .cse1) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_33| v_ArrVal_2916) |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|)) v_ArrVal_2907) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) .cse1))) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_33|) 0)))) is different from false [2022-12-14 11:10:02,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242130602] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:10:02,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2111980906] [2022-12-14 11:10:02,363 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-12-14 11:10:02,363 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:10:02,364 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:10:02,364 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:10:02,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:10:02,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,384 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 [2022-12-14 11:10:02,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:10:02,418 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 [2022-12-14 11:10:02,422 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 [2022-12-14 11:10:02,427 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 [2022-12-14 11:10:02,430 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 [2022-12-14 11:10:02,433 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 [2022-12-14 11:10:02,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:02,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:02,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:02,454 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 [2022-12-14 11:10:02,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,460 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 36 treesize of output 23 [2022-12-14 11:10:02,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-12-14 11:10:02,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:10:02,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:10:02,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:10:02,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,581 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:02,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:02,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:02,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:02,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:02,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:10:02,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:02,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,650 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:02,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:02,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:02,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:02,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:02,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:10:02,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:02,725 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 21 [2022-12-14 11:10:02,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 11:10:02,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:10:02,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,766 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 [2022-12-14 11:10:02,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:02,787 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:10:02,787 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 28 treesize of output 30 [2022-12-14 11:10:02,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:02,809 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:10:02,809 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 28 treesize of output 34 [2022-12-14 11:10:02,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:02,856 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:10:02,857 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 28 treesize of output 30 [2022-12-14 11:10:02,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,867 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 [2022-12-14 11:10:02,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:02,885 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:10:02,885 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 28 treesize of output 34 [2022-12-14 11:10:02,926 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 11 treesize of output 7 [2022-12-14 11:10:02,931 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 15 treesize of output 1 [2022-12-14 11:10:02,941 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 11 treesize of output 7 [2022-12-14 11:10:02,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,968 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 21 treesize of output 20 [2022-12-14 11:10:02,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:02,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:02,988 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 21 treesize of output 20 [2022-12-14 11:10:03,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:03,066 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:03,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:03,081 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:03,081 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 7 [2022-12-14 11:10:03,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:10:03,096 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 15 treesize of output 19 [2022-12-14 11:10:03,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:03,119 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:03,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:03,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:03,188 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:03,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:03,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:03,204 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:03,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:03,228 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:10:03,228 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 15 treesize of output 19 [2022-12-14 11:10:03,249 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:03,249 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 7 [2022-12-14 11:10:03,419 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 11 treesize of output 7 [2022-12-14 11:10:03,427 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 11 treesize of output 7 [2022-12-14 11:10:03,433 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 15 treesize of output 1 [2022-12-14 11:10:03,460 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 11:10:03,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:03,486 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 11:10:03,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-12-14 11:10:03,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:03,514 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 15 treesize of output 1 [2022-12-14 11:10:03,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,535 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:10:03,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2022-12-14 11:10:03,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,559 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:10:03,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2022-12-14 11:10:03,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,661 INFO L321 Elim1Store]: treesize reduction 54, result has 59.1 percent of original size [2022-12-14 11:10:03,662 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 5 case distinctions, treesize of input 54 treesize of output 113 [2022-12-14 11:10:03,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:03,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:03,760 INFO L321 Elim1Store]: treesize reduction 100, result has 24.2 percent of original size [2022-12-14 11:10:03,760 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 5 case distinctions, treesize of input 45 treesize of output 58 [2022-12-14 11:10:03,775 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:10:03,845 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:10:04,487 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:10:04,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:04,623 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:04,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:04,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:04,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:04,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:04,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:10:04,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:04,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:04,689 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:04,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:04,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:04,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:04,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:04,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:10:04,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:04,796 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 15 treesize of output 1 [2022-12-14 11:10:04,801 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 11 treesize of output 7 [2022-12-14 11:10:04,804 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 11 treesize of output 7 [2022-12-14 11:10:04,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:04,822 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:04,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:04,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:04,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:04,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:10:04,852 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 8 for LOIs [2022-12-14 11:10:04,855 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 [2022-12-14 11:10:04,857 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 [2022-12-14 11:10:04,863 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 [2022-12-14 11:10:04,866 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 11 treesize of output 7 [2022-12-14 11:10:04,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:10:04,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:04,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:04,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:04,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:04,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:04,892 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 [2022-12-14 11:10:04,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:04,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:04,898 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 36 treesize of output 23 [2022-12-14 11:10:04,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:04,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:04,904 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 36 treesize of output 23 [2022-12-14 11:10:04,906 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:10:12,225 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9251#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~count~0#1| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|))' at error location [2022-12-14 11:10:12,225 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:10:12,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:10:12,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28] total 52 [2022-12-14 11:10:12,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639541945] [2022-12-14 11:10:12,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:10:12,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-14 11:10:12,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:10:12,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-14 11:10:12,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=7227, Unknown=72, NotChecked=346, Total=8010 [2022-12-14 11:10:12,227 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 54 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 45 states have internal predecessors, (72), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:10:15,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:10:15,606 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2022-12-14 11:10:15,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 11:10:15,607 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 45 states have internal predecessors, (72), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 45 [2022-12-14 11:10:15,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:10:15,607 INFO L225 Difference]: With dead ends: 203 [2022-12-14 11:10:15,607 INFO L226 Difference]: Without dead ends: 203 [2022-12-14 11:10:15,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3344 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=654, Invalid=10202, Unknown=72, NotChecked=414, Total=11342 [2022-12-14 11:10:15,608 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 696 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:10:15,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 766 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 11:10:15,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-12-14 11:10:15,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 93. [2022-12-14 11:10:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 87 states have internal predecessors, (94), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:10:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2022-12-14 11:10:15,611 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 45 [2022-12-14 11:10:15,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:10:15,611 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2022-12-14 11:10:15,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 45 states have internal predecessors, (72), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:10:15,612 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2022-12-14 11:10:15,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 11:10:15,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:10:15,612 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:10:15,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 11:10:15,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 11:10:15,813 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:10:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:10:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1793709656, now seen corresponding path program 1 times [2022-12-14 11:10:15,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:10:15,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646240744] [2022-12-14 11:10:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:15,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:10:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:10:18,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:10:18,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646240744] [2022-12-14 11:10:18,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646240744] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:10:18,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775590622] [2022-12-14 11:10:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:18,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:10:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:10:18,074 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:10:18,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 11:10:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:18,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 131 conjunts are in the unsatisfiable core [2022-12-14 11:10:18,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:10:18,308 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 [2022-12-14 11:10:18,316 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 5 treesize of output 3 [2022-12-14 11:10:18,445 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:10:18,445 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 [2022-12-14 11:10:18,590 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 11 treesize of output 7 [2022-12-14 11:10:18,598 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 [2022-12-14 11:10:18,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:18,713 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:18,713 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 16 treesize of output 14 [2022-12-14 11:10:18,849 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 11 treesize of output 7 [2022-12-14 11:10:18,983 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 14 treesize of output 16 [2022-12-14 11:10:19,169 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:10:19,169 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 27 treesize of output 28 [2022-12-14 11:10:19,264 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 48 treesize of output 35 [2022-12-14 11:10:19,365 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:19,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 25 [2022-12-14 11:10:19,370 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 7 treesize of output 3 [2022-12-14 11:10:19,373 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 5 treesize of output 3 [2022-12-14 11:10:19,376 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 5 treesize of output 3 [2022-12-14 11:10:19,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:19,790 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:10:19,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 56 [2022-12-14 11:10:19,801 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 11:10:19,801 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 15 treesize of output 15 [2022-12-14 11:10:19,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 11:10:19,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:19,822 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 14 treesize of output 16 [2022-12-14 11:10:20,464 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:10:20,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 67 [2022-12-14 11:10:20,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:20,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 11:10:20,477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-12-14 11:10:20,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:20,592 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 41 treesize of output 37 [2022-12-14 11:10:20,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:20,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:10:20,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:20,616 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 41 treesize of output 37 [2022-12-14 11:10:20,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:20,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:10:20,707 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 33 treesize of output 31 [2022-12-14 11:10:20,710 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 21 treesize of output 20 [2022-12-14 11:10:20,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 34 treesize of output 18 [2022-12-14 11:10:20,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:10:20,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:10:21,024 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|))) (and (forall ((|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int)) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store .cse0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8))) (forall ((|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int) (v_ArrVal_3161 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store .cse0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_3161) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false [2022-12-14 11:10:21,034 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3159 (Array Int Int)) (|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int)) (<= 0 (+ 8 (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_3159))) (store .cse0 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (forall ((v_ArrVal_3158 (Array Int Int)) (v_ArrVal_3159 (Array Int Int)) (|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int) (v_ArrVal_3161 (Array Int Int))) (<= (+ 12 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_3159))) (store .cse1 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_3158) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_3161) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2022-12-14 11:10:22,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775590622] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:10:22,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [980551935] [2022-12-14 11:10:22,411 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-12-14 11:10:22,411 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:10:22,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:10:22,412 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:10:22,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:10:22,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,424 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 [2022-12-14 11:10:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:10:22,451 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 [2022-12-14 11:10:22,454 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 [2022-12-14 11:10:22,459 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 [2022-12-14 11:10:22,462 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 [2022-12-14 11:10:22,466 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 [2022-12-14 11:10:22,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:22,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:22,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:22,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,487 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 36 treesize of output 23 [2022-12-14 11:10:22,492 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 [2022-12-14 11:10:22,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,497 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 36 treesize of output 23 [2022-12-14 11:10:22,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:10:22,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:10:22,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:10:22,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,597 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:22,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:22,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:10:22,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:10:22,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:10:22,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:22,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:10:22,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,673 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:22,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:22,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:10:22,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:22,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:10:22,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:10:22,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:10:22,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:10:22,767 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 11 [2022-12-14 11:10:22,777 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 21 [2022-12-14 11:10:22,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:22,809 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:10:22,809 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 28 treesize of output 30 [2022-12-14 11:10:22,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:22,827 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:10:22,828 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 28 treesize of output 34 [2022-12-14 11:10:22,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,841 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 [2022-12-14 11:10:22,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:22,885 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:10:22,885 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 28 treesize of output 34 [2022-12-14 11:10:22,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:22,905 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:10:22,906 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 28 treesize of output 30 [2022-12-14 11:10:22,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:22,917 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 [2022-12-14 11:10:22,961 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 11 treesize of output 7 [2022-12-14 11:10:22,966 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 11 treesize of output 7 [2022-12-14 11:10:22,971 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 15 treesize of output 1 [2022-12-14 11:10:22,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:23,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,012 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 21 treesize of output 20 [2022-12-14 11:10:23,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,024 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 21 treesize of output 20 [2022-12-14 11:10:23,112 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:10:23,112 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 15 treesize of output 19 [2022-12-14 11:10:23,127 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:23,127 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 7 [2022-12-14 11:10:23,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:23,138 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:23,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:23,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:23,151 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:23,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:23,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:23,231 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:23,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:23,245 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:23,246 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 7 [2022-12-14 11:10:23,259 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:10:23,259 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 15 treesize of output 19 [2022-12-14 11:10:23,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:23,274 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:23,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:23,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:10:23,435 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 11 treesize of output 7 [2022-12-14 11:10:23,443 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 11 treesize of output 7 [2022-12-14 11:10:23,473 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 11:10:23,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:23,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:23,502 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 11:10:23,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-12-14 11:10:23,527 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 15 treesize of output 1 [2022-12-14 11:10:23,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,550 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:10:23,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2022-12-14 11:10:23,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,578 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:10:23,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2022-12-14 11:10:23,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:23,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,656 INFO L321 Elim1Store]: treesize reduction 100, result has 24.2 percent of original size [2022-12-14 11:10:23,656 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 5 case distinctions, treesize of input 45 treesize of output 58 [2022-12-14 11:10:23,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:23,741 INFO L321 Elim1Store]: treesize reduction 54, result has 59.1 percent of original size [2022-12-14 11:10:23,741 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 5 case distinctions, treesize of input 54 treesize of output 113 [2022-12-14 11:10:23,784 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:10:23,836 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:10:24,531 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:10:24,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:24,680 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:24,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:24,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:24,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:10:24,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:24,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:10:24,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:10:24,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:24,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:10:24,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:24,754 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:24,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:24,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:24,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:10:24,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:24,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:10:24,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:24,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:10:24,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:10:24,892 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 11 treesize of output 7 [2022-12-14 11:10:24,896 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 15 treesize of output 1 [2022-12-14 11:10:24,902 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 11 treesize of output 7 [2022-12-14 11:10:24,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:24,925 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:24,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:24,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:24,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:24,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:10:24,955 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 18 for LOIs [2022-12-14 11:10:24,961 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 [2022-12-14 11:10:24,964 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 [2022-12-14 11:10:24,975 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 [2022-12-14 11:10:24,978 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 [2022-12-14 11:10:24,981 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 [2022-12-14 11:10:24,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:24,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:24,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:25,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:25,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:25,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:25,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:25,014 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 36 treesize of output 23 [2022-12-14 11:10:25,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:25,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:25,021 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 36 treesize of output 23 [2022-12-14 11:10:25,027 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 [2022-12-14 11:10:25,030 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:10:33,425 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9850#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~count~0#1| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|))' at error location [2022-12-14 11:10:33,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:10:33,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:10:33,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28] total 55 [2022-12-14 11:10:33,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466697502] [2022-12-14 11:10:33,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:10:33,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-12-14 11:10:33,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:10:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-12-14 11:10:33,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=8192, Unknown=7, NotChecked=366, Total=8930 [2022-12-14 11:10:33,427 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 57 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 48 states have internal predecessors, (77), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:10:38,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:10:38,646 INFO L93 Difference]: Finished difference Result 200 states and 216 transitions. [2022-12-14 11:10:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 11:10:38,646 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 48 states have internal predecessors, (77), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 45 [2022-12-14 11:10:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:10:38,647 INFO L225 Difference]: With dead ends: 200 [2022-12-14 11:10:38,647 INFO L226 Difference]: Without dead ends: 200 [2022-12-14 11:10:38,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 114 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3263 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=745, Invalid=12136, Unknown=9, NotChecked=450, Total=13340 [2022-12-14 11:10:38,648 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1112 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 120 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 11:10:38,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 692 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2336 Invalid, 3 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 11:10:38,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-12-14 11:10:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 95. [2022-12-14 11:10:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 71 states have (on average 1.352112676056338) internal successors, (96), 89 states have internal predecessors, (96), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:10:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2022-12-14 11:10:38,650 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 45 [2022-12-14 11:10:38,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:10:38,650 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2022-12-14 11:10:38,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 48 states have internal predecessors, (77), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:10:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2022-12-14 11:10:38,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 11:10:38,651 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:10:38,651 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:10:38,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-14 11:10:38,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 11:10:38,852 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:10:38,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:10:38,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1499866724, now seen corresponding path program 1 times [2022-12-14 11:10:38,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:10:38,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111680619] [2022-12-14 11:10:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:38,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:10:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:10:39,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:10:39,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111680619] [2022-12-14 11:10:39,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111680619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:10:39,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:10:39,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 11:10:39,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209446938] [2022-12-14 11:10:39,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:10:39,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 11:10:39,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:10:39,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 11:10:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:10:39,056 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 9 states, 6 states have (on average 5.5) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:10:39,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:10:39,253 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2022-12-14 11:10:39,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 11:10:39,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 5.5) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2022-12-14 11:10:39,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:10:39,254 INFO L225 Difference]: With dead ends: 151 [2022-12-14 11:10:39,254 INFO L226 Difference]: Without dead ends: 151 [2022-12-14 11:10:39,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-12-14 11:10:39,254 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 123 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:10:39,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 349 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:10:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-14 11:10:39,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 96. [2022-12-14 11:10:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 90 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:10:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2022-12-14 11:10:39,256 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 46 [2022-12-14 11:10:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:10:39,256 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2022-12-14 11:10:39,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 5.5) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:10:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2022-12-14 11:10:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 11:10:39,256 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:10:39,256 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:10:39,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 11:10:39,257 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:10:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:10:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1499866723, now seen corresponding path program 1 times [2022-12-14 11:10:39,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:10:39,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382410807] [2022-12-14 11:10:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:39,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:10:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 11:10:39,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:10:39,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382410807] [2022-12-14 11:10:39,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382410807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:10:39,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:10:39,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 11:10:39,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214773024] [2022-12-14 11:10:39,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:10:39,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 11:10:39,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:10:39,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 11:10:39,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:10:39,514 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 9 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:10:39,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:10:39,751 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2022-12-14 11:10:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:10:39,751 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2022-12-14 11:10:39,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:10:39,751 INFO L225 Difference]: With dead ends: 133 [2022-12-14 11:10:39,751 INFO L226 Difference]: Without dead ends: 133 [2022-12-14 11:10:39,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:10:39,752 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 161 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:10:39,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 389 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:10:39,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-12-14 11:10:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 93. [2022-12-14 11:10:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 87 states have internal predecessors, (94), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:10:39,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2022-12-14 11:10:39,754 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 46 [2022-12-14 11:10:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:10:39,754 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2022-12-14 11:10:39,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:10:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2022-12-14 11:10:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 11:10:39,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:10:39,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:10:39,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 11:10:39,755 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:10:39,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:10:39,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1199269389, now seen corresponding path program 1 times [2022-12-14 11:10:39,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:10:39,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603704816] [2022-12-14 11:10:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:10:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 11:10:39,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:10:39,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603704816] [2022-12-14 11:10:39,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603704816] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:10:39,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988015209] [2022-12-14 11:10:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:39,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:10:39,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:10:39,849 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:10:39,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 11:10:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:40,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 11:10:40,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:10:40,056 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 [2022-12-14 11:10:40,057 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 [2022-12-14 11:10:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 11:10:40,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:10:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 11:10:40,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988015209] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:10:40,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1746611957] [2022-12-14 11:10:40,114 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-12-14 11:10:40,114 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:10:40,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:10:40,115 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:10:40,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:10:40,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,130 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 [2022-12-14 11:10:40,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:10:40,152 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 [2022-12-14 11:10:40,155 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 [2022-12-14 11:10:40,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:10:40,162 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 [2022-12-14 11:10:40,166 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 [2022-12-14 11:10:40,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:40,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:40,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:40,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,187 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 36 treesize of output 23 [2022-12-14 11:10:40,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,192 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 36 treesize of output 23 [2022-12-14 11:10:40,196 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 [2022-12-14 11:10:40,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:10:40,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:10:40,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:10:40,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,287 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:40,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:40,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:10:40,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:40,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:40,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:40,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:40,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,352 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:40,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:40,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:40,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:10:40,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:40,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:40,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:40,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,434 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 25 treesize of output 13 [2022-12-14 11:10:40,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,441 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 28 treesize of output 23 [2022-12-14 11:10:40,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-12-14 11:10:40,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:40,483 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 11:10:40,483 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 30 treesize of output 32 [2022-12-14 11:10:40,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,498 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 29 treesize of output 13 [2022-12-14 11:10:40,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:40,518 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 11:10:40,518 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 30 treesize of output 36 [2022-12-14 11:10:40,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:40,561 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 11:10:40,561 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 30 treesize of output 36 [2022-12-14 11:10:40,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,572 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 29 treesize of output 13 [2022-12-14 11:10:40,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:40,593 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 11:10:40,593 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 30 treesize of output 32 [2022-12-14 11:10:40,642 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 11 treesize of output 7 [2022-12-14 11:10:40,649 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 11 treesize of output 7 [2022-12-14 11:10:40,655 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 15 treesize of output 1 [2022-12-14 11:10:40,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:40,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,695 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 21 treesize of output 20 [2022-12-14 11:10:40,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,709 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 21 treesize of output 20 [2022-12-14 11:10:40,787 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:40,787 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 7 [2022-12-14 11:10:40,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:40,803 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:40,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:40,821 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:10:40,821 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 15 treesize of output 19 [2022-12-14 11:10:40,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:40,839 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:40,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:40,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:40,943 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:40,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:40,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:40,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:40,964 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:40,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:10:40,986 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:10:40,986 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 15 treesize of output 19 [2022-12-14 11:10:41,003 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:41,004 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 7 [2022-12-14 11:10:41,175 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 15 treesize of output 1 [2022-12-14 11:10:41,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:41,197 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:10:41,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 28 [2022-12-14 11:10:41,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:41,215 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:10:41,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 28 [2022-12-14 11:10:41,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:41,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:41,256 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:41,256 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 1 case distinctions, treesize of input 46 treesize of output 40 [2022-12-14 11:10:41,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:41,271 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:41,271 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 1 case distinctions, treesize of input 46 treesize of output 40 [2022-12-14 11:10:41,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,335 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:41,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:41,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:41,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:41,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:41,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:10:41,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:41,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,414 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:41,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:41,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:41,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:10:41,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:10:41,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:41,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:10:41,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:41,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,542 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-12-14 11:10:41,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:41,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:41,558 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-12-14 11:10:41,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:41,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:10:41,570 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-12-14 11:10:41,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,614 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:41,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:10:41,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:10:41,639 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 8 for LOIs [2022-12-14 11:10:41,642 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 [2022-12-14 11:10:41,645 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 [2022-12-14 11:10:41,651 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 [2022-12-14 11:10:41,655 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 [2022-12-14 11:10:41,659 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 [2022-12-14 11:10:41,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:41,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:10:41,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:10:41,683 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 [2022-12-14 11:10:41,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,689 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 36 treesize of output 23 [2022-12-14 11:10:41,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:41,695 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 36 treesize of output 23 [2022-12-14 11:10:41,698 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:10:46,269 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11000#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|)) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|) 0))) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (not (= (select |#valid| |ULTIMATE.start_dll_circular_insert_#t~mem16#1.base|) 1)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|) |ULTIMATE.start_dll_circular_insert_#t~mem16#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| 0) (<= (+ |ULTIMATE.start_dll_circular_insert_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= (+ 8 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (select |#length| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (= |#NULL.base| 0) (= |ULTIMATE.start_dll_circular_insert_#t~mem16#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|)))' at error location [2022-12-14 11:10:46,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:10:46,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:10:46,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-12-14 11:10:46,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909115177] [2022-12-14 11:10:46,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:10:46,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:10:46,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:10:46,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:10:46,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 11:10:46,270 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:10:46,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:10:46,368 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2022-12-14 11:10:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:10:46,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-12-14 11:10:46,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:10:46,368 INFO L225 Difference]: With dead ends: 81 [2022-12-14 11:10:46,368 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 11:10:46,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=221, Invalid=1419, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 11:10:46,369 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 8 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:10:46,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 302 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:10:46,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 11:10:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-12-14 11:10:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 75 states have internal predecessors, (81), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:10:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2022-12-14 11:10:46,370 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 46 [2022-12-14 11:10:46,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:10:46,371 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2022-12-14 11:10:46,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 11:10:46,371 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2022-12-14 11:10:46,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-14 11:10:46,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:10:46,371 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:10:46,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-14 11:10:46,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-14 11:10:46,573 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:10:46,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:10:46,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1473091094, now seen corresponding path program 1 times [2022-12-14 11:10:46,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:10:46,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111736413] [2022-12-14 11:10:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:46,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:10:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:10:51,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:10:51,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111736413] [2022-12-14 11:10:51,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111736413] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:10:51,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704267520] [2022-12-14 11:10:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:51,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:10:51,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:10:51,574 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:10:51,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 11:10:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:51,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 148 conjunts are in the unsatisfiable core [2022-12-14 11:10:51,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:10:51,765 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 [2022-12-14 11:10:51,840 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 5 treesize of output 3 [2022-12-14 11:10:51,987 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:10:51,987 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 [2022-12-14 11:10:52,177 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 11 treesize of output 7 [2022-12-14 11:10:52,258 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 [2022-12-14 11:10:52,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:52,351 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:10:52,351 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 16 treesize of output 14 [2022-12-14 11:10:52,563 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 11 treesize of output 7 [2022-12-14 11:10:52,570 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 19 treesize of output 18 [2022-12-14 11:10:52,720 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:10:52,720 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 44 treesize of output 41 [2022-12-14 11:10:52,725 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 18 treesize of output 20 [2022-12-14 11:10:52,996 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:10:52,996 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 37 treesize of output 36 [2022-12-14 11:10:53,001 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 18 treesize of output 20 [2022-12-14 11:10:53,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-12-14 11:10:53,143 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 48 treesize of output 35 [2022-12-14 11:10:53,288 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:10:53,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 27 [2022-12-14 11:10:53,293 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 7 treesize of output 3 [2022-12-14 11:10:53,296 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 7 treesize of output 3 [2022-12-14 11:10:53,299 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 5 treesize of output 3 [2022-12-14 11:10:53,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:53,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:10:53,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:53,719 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:10:53,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 58 [2022-12-14 11:10:53,747 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 11:10:53,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-12-14 11:10:53,754 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 5 treesize of output 3 [2022-12-14 11:10:53,763 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 11:10:53,763 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 15 treesize of output 15 [2022-12-14 11:10:54,429 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:10:54,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 88 [2022-12-14 11:10:54,437 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 35 treesize of output 30 [2022-12-14 11:10:54,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:54,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 11:10:54,446 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-12-14 11:10:54,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:54,561 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 14 treesize of output 16 [2022-12-14 11:10:54,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:54,566 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 43 treesize of output 39 [2022-12-14 11:10:54,570 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 18 treesize of output 20 [2022-12-14 11:10:54,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:54,593 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 43 treesize of output 39 [2022-12-14 11:10:54,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 11:10:54,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:10:54,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:10:54,709 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 35 treesize of output 33 [2022-12-14 11:10:54,715 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 18 treesize of output 20 [2022-12-14 11:10:54,721 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 14 treesize of output 16 [2022-12-14 11:10:54,833 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 16 [2022-12-14 11:10:54,836 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 [2022-12-14 11:10:54,910 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 [2022-12-14 11:10:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:10:54,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:11:19,941 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3826 Int) (v_ArrVal_3828 (Array Int Int)) (|v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_43| Int) (v_ArrVal_3850 (Array Int Int)) (v_ArrVal_3851 (Array Int Int)) (v_ArrVal_3852 (Array Int Int)) (v_ArrVal_3832 (Array Int Int)) (v_ArrVal_3833 (Array Int Int)) (v_ArrVal_3834 (Array Int Int)) (v_ArrVal_3835 (Array Int Int)) (v_ArrVal_3825 (Array Int Int)) (v_ArrVal_3836 (Array Int Int)) (v_ArrVal_3837 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse5 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_43| v_ArrVal_3850)) (.cse4 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_43| v_ArrVal_3852))) (let ((.cse1 (select (select .cse4 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|)) (.cse2 (select (select .cse5 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse3 (select (select .cse4 .cse1) .cse2))) (select (select (store (store (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_43| v_ArrVal_3851))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_ArrVal_3826))) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_43| v_ArrVal_3833) .cse3 v_ArrVal_3835) (select (select (store (store (store .cse4 .cse1 v_ArrVal_3828) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_43| v_ArrVal_3834) .cse3 v_ArrVal_3837) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ 8 (select (select (store (store (store .cse5 .cse1 v_ArrVal_3825) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_43| v_ArrVal_3832) .cse3 v_ArrVal_3836) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) (not (< |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_43| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_43|) 0)))) is different from false [2022-12-14 11:11:19,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704267520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:19,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [207851695] [2022-12-14 11:11:19,944 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-12-14 11:11:19,944 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:11:19,944 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:11:19,945 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:11:19,945 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:11:19,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:19,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:19,957 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 [2022-12-14 11:11:19,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:19,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:19,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:11:19,984 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 [2022-12-14 11:11:19,987 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 [2022-12-14 11:11:19,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:11:19,995 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 [2022-12-14 11:11:19,998 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 [2022-12-14 11:11:20,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,003 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 21 treesize of output 20 [2022-12-14 11:11:20,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:20,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:11:20,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,019 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 36 treesize of output 23 [2022-12-14 11:11:20,029 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 [2022-12-14 11:11:20,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,034 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 36 treesize of output 23 [2022-12-14 11:11:20,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:11:20,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:11:20,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:11:20,173 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:11:20,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:11:20,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:11:20,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:20,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:11:20,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:11:20,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:20,348 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:20,350 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:20,351 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:20,400 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:11:20,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:11:20,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:11:20,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:20,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:11:20,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:11:20,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:20,558 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:20,559 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:20,561 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:20,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:20,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,631 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-12-14 11:11:20,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:20,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:20,642 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-12-14 11:11:20,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:20,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:20,654 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-12-14 11:11:20,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,736 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 260 treesize of output 238 [2022-12-14 11:11:20,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:20,758 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 11:11:20,758 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 1 case distinctions, treesize of input 261 treesize of output 261 [2022-12-14 11:11:20,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:20,781 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 11:11:20,781 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 1 case distinctions, treesize of input 249 treesize of output 245 [2022-12-14 11:11:20,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:20,867 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 260 treesize of output 238 [2022-12-14 11:11:20,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:20,892 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 11:11:20,892 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 1 case distinctions, treesize of input 261 treesize of output 261 [2022-12-14 11:11:20,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:20,914 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 11:11:20,914 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 1 case distinctions, treesize of input 249 treesize of output 245 [2022-12-14 11:11:21,057 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 11 treesize of output 7 [2022-12-14 11:11:21,063 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 11 treesize of output 7 [2022-12-14 11:11:21,071 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 15 treesize of output 1 [2022-12-14 11:11:21,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:21,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,109 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 21 treesize of output 20 [2022-12-14 11:11:21,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,122 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 21 treesize of output 20 [2022-12-14 11:11:21,184 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:21,184 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 15 treesize of output 19 [2022-12-14 11:11:21,201 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:21,201 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 7 [2022-12-14 11:11:21,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:21,214 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:21,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:21,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:21,227 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:21,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:21,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:21,297 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:21,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:21,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:21,311 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 15 treesize of output 19 [2022-12-14 11:11:21,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:21,331 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:21,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:21,342 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:21,342 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 7 [2022-12-14 11:11:21,489 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 15 treesize of output 1 [2022-12-14 11:11:21,495 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 11 treesize of output 7 [2022-12-14 11:11:21,501 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 11 treesize of output 7 [2022-12-14 11:11:21,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:21,539 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 11:11:21,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-12-14 11:11:21,564 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 11:11:21,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:11:21,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,607 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:11:21,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2022-12-14 11:11:21,620 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 15 treesize of output 1 [2022-12-14 11:11:21,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,650 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:11:21,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2022-12-14 11:11:21,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,754 INFO L321 Elim1Store]: treesize reduction 100, result has 24.2 percent of original size [2022-12-14 11:11:21,754 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 5 case distinctions, treesize of input 45 treesize of output 58 [2022-12-14 11:11:21,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:21,869 INFO L321 Elim1Store]: treesize reduction 54, result has 59.1 percent of original size [2022-12-14 11:11:21,869 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 5 case distinctions, treesize of input 54 treesize of output 113 [2022-12-14 11:11:21,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:21,932 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:11:21,996 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:11:23,007 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:11:23,173 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:11:23,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:11:23,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:23,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:23,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:11:23,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:11:23,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:11:23,293 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:23,295 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:23,341 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:11:23,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:11:23,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:11:23,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:11:23,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:11:23,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:23,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:23,512 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:23,514 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:23,515 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:23,562 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 11 treesize of output 7 [2022-12-14 11:11:23,567 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 15 treesize of output 1 [2022-12-14 11:11:23,573 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 11 treesize of output 7 [2022-12-14 11:11:23,614 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:11:23,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:11:23,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:23,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:23,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:11:23,760 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-12-14 11:11:23,764 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 [2022-12-14 11:11:23,767 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 [2022-12-14 11:11:23,774 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 [2022-12-14 11:11:23,777 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 [2022-12-14 11:11:23,781 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 [2022-12-14 11:11:23,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:23,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:11:23,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:23,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:23,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:11:23,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:23,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:23,803 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 36 treesize of output 23 [2022-12-14 11:11:23,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:23,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:23,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-12-14 11:11:23,814 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 [2022-12-14 11:11:23,815 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:11:33,397 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11454#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~count~0#1| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) (<= 0 (+ |ULTIMATE.start_main_~ptr~0#1.offset| 8)))' at error location [2022-12-14 11:11:33,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:11:33,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:11:33,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30] total 60 [2022-12-14 11:11:33,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223560875] [2022-12-14 11:11:33,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:11:33,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-12-14 11:11:33,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:33,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-12-14 11:11:33,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=8896, Unknown=235, NotChecked=192, Total=9702 [2022-12-14 11:11:33,398 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 61 states, 51 states have (on average 1.588235294117647) internal successors, (81), 52 states have internal predecessors, (81), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 11:11:44,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:44,118 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2022-12-14 11:11:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 11:11:44,118 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 51 states have (on average 1.588235294117647) internal successors, (81), 52 states have internal predecessors, (81), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 47 [2022-12-14 11:11:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:44,118 INFO L225 Difference]: With dead ends: 153 [2022-12-14 11:11:44,118 INFO L226 Difference]: Without dead ends: 153 [2022-12-14 11:11:44,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3543 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=756, Invalid=13045, Unknown=245, NotChecked=234, Total=14280 [2022-12-14 11:11:44,120 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 698 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 82 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:44,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 884 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2354 Invalid, 2 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 11:11:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-14 11:11:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 85. [2022-12-14 11:11:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 79 states have internal predecessors, (85), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:11:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-12-14 11:11:44,121 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 47 [2022-12-14 11:11:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:44,122 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-12-14 11:11:44,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 51 states have (on average 1.588235294117647) internal successors, (81), 52 states have internal predecessors, (81), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 11:11:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-12-14 11:11:44,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 11:11:44,122 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:44,122 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:11:44,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-14 11:11:44,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-14 11:11:44,323 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:11:44,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1737093279, now seen corresponding path program 1 times [2022-12-14 11:11:44,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:44,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966450806] [2022-12-14 11:11:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:44,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 11:11:44,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:44,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966450806] [2022-12-14 11:11:44,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966450806] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:44,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217559399] [2022-12-14 11:11:44,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:44,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:44,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:44,495 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:44,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 11:11:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:44,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 11:11:44,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:44,694 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 [2022-12-14 11:11:44,713 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_node_create_~temp~0#1.base| 0)) (exists ((v_ArrVal_4062 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_4062)))) is different from true [2022-12-14 11:11:44,725 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4062 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_4062))) (not (= |c_node_create_#res#1.base| 0))) is different from true [2022-12-14 11:11:44,728 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 [2022-12-14 11:11:44,748 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_4063 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_4063))) (not (= |node_create_~temp~0#1.base| 0)))) is different from true [2022-12-14 11:11:44,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 11:11:44,783 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (not (= |node_create_~temp~0#1.base| 0)) (exists ((v_ArrVal_4064 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_4064))))) is different from true [2022-12-14 11:11:44,804 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 [2022-12-14 11:11:44,809 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 7 treesize of output 3 [2022-12-14 11:11:44,827 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:11:44,827 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 [2022-12-14 11:11:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 15 not checked. [2022-12-14 11:11:44,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:11:44,855 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 19 treesize of output 11 [2022-12-14 11:11:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 11:11:45,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217559399] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:11:45,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2146718325] [2022-12-14 11:11:45,073 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2022-12-14 11:11:45,073 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:11:45,074 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:11:45,074 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:11:45,074 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:11:45,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,091 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 [2022-12-14 11:11:45,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:11:45,115 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 [2022-12-14 11:11:45,117 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 [2022-12-14 11:11:45,121 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 [2022-12-14 11:11:45,124 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 [2022-12-14 11:11:45,127 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 [2022-12-14 11:11:45,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:11:45,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:11:45,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:45,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,148 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 36 treesize of output 23 [2022-12-14 11:11:45,152 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 [2022-12-14 11:11:45,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,157 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 36 treesize of output 23 [2022-12-14 11:11:45,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:11:45,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:11:45,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:11:45,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,254 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:11:45,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:11:45,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:11:45,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:45,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:45,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:11:45,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:45,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,334 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:11:45,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:11:45,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:11:45,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:45,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:11:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:45,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:45,432 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 11 [2022-12-14 11:11:45,441 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 21 [2022-12-14 11:11:45,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:11:45,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,481 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 [2022-12-14 11:11:45,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:45,502 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:11:45,502 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 28 treesize of output 34 [2022-12-14 11:11:45,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:45,523 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:11:45,524 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 28 treesize of output 30 [2022-12-14 11:11:45,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:45,571 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:11:45,571 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 28 treesize of output 30 [2022-12-14 11:11:45,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,583 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 [2022-12-14 11:11:45,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:45,609 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:11:45,609 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 28 treesize of output 34 [2022-12-14 11:11:45,665 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 11 treesize of output 7 [2022-12-14 11:11:45,672 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 15 treesize of output 1 [2022-12-14 11:11:45,683 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 11 treesize of output 7 [2022-12-14 11:11:45,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,708 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 21 treesize of output 20 [2022-12-14 11:11:45,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,721 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 21 treesize of output 20 [2022-12-14 11:11:45,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:45,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:45,824 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 15 treesize of output 19 [2022-12-14 11:11:45,845 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:45,846 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 7 [2022-12-14 11:11:45,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:45,864 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:45,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:45,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:45,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:45,883 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:45,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:45,985 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:45,985 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 7 [2022-12-14 11:11:45,996 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:45,997 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 15 treesize of output 19 [2022-12-14 11:11:46,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,013 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:46,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:46,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,029 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:46,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:46,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,177 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:11:46,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-12-14 11:11:46,189 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 15 treesize of output 1 [2022-12-14 11:11:46,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,207 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:11:46,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 11:11:46,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,235 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:46,236 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 1 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 11:11:46,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:46,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,266 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:46,266 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 11:11:46,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,307 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-12-14 11:11:46,307 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 3 case distinctions, treesize of input 39 treesize of output 45 [2022-12-14 11:11:46,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,337 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 11:11:46,337 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 3 case distinctions, treesize of input 35 treesize of output 33 [2022-12-14 11:11:46,347 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 15 treesize of output 1 [2022-12-14 11:11:46,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,458 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:11:46,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:11:46,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:11:46,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:46,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:46,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:11:46,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:46,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,534 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:11:46,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:11:46,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:46,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:46,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:11:46,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:46,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:11:46,657 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 15 treesize of output 1 [2022-12-14 11:11:46,661 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 11 treesize of output 7 [2022-12-14 11:11:46,666 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 11 treesize of output 7 [2022-12-14 11:11:46,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,685 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:11:46,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 11:11:46,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:11:46,714 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 65 for LOIs [2022-12-14 11:11:46,734 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 [2022-12-14 11:11:46,745 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 [2022-12-14 11:11:46,787 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 [2022-12-14 11:11:46,801 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 [2022-12-14 11:11:46,818 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 [2022-12-14 11:11:46,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:11:46,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:11:46,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:46,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,907 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 36 treesize of output 23 [2022-12-14 11:11:46,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,918 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 36 treesize of output 23 [2022-12-14 11:11:46,933 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 [2022-12-14 11:11:46,950 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:11:51,652 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12065#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (= |ULTIMATE.start_main_~count~0#1| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 12) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| 0) (<= (+ |ULTIMATE.start_dll_circular_insert_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= (+ 8 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (select |#length| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (<= 0 |#StackHeapBarrier|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 8)) |ULTIMATE.start_main_~data~0#1|)) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_main_~ptr~0#1.offset| 8)))' at error location [2022-12-14 11:11:51,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:11:51,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:11:51,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 19 [2022-12-14 11:11:51,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405217824] [2022-12-14 11:11:51,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:11:51,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 11:11:51,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:51,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 11:11:51,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1941, Unknown=4, NotChecked=372, Total=2550 [2022-12-14 11:11:51,654 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 20 states, 19 states have (on average 4.421052631578948) internal successors, (84), 17 states have internal predecessors, (84), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 11:11:51,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:51,887 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2022-12-14 11:11:51,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 11:11:51,887 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.421052631578948) internal successors, (84), 17 states have internal predecessors, (84), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 48 [2022-12-14 11:11:51,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:51,888 INFO L225 Difference]: With dead ends: 76 [2022-12-14 11:11:51,888 INFO L226 Difference]: Without dead ends: 76 [2022-12-14 11:11:51,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=295, Invalid=2579, Unknown=4, NotChecked=428, Total=3306 [2022-12-14 11:11:51,889 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 96 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:51,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 151 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 273 Unchecked, 0.1s Time] [2022-12-14 11:11:51,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-14 11:11:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-12-14 11:11:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 70 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:11:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2022-12-14 11:11:51,894 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 48 [2022-12-14 11:11:51,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:51,894 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2022-12-14 11:11:51,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.421052631578948) internal successors, (84), 17 states have internal predecessors, (84), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 11:11:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2022-12-14 11:11:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 11:11:51,895 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:51,895 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:11:51,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 11:11:52,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:52,096 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:11:52,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:52,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1122294607, now seen corresponding path program 1 times [2022-12-14 11:11:52,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:52,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716490637] [2022-12-14 11:11:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:52,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:11:54,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:54,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716490637] [2022-12-14 11:11:54,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716490637] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:54,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533337871] [2022-12-14 11:11:54,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:54,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:54,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:54,430 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:54,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 11:11:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:54,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 123 conjunts are in the unsatisfiable core [2022-12-14 11:11:54,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:54,640 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 [2022-12-14 11:11:54,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:54,747 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:11:54,747 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 [2022-12-14 11:11:54,863 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 11 treesize of output 7 [2022-12-14 11:11:54,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:54,997 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:11:54,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 22 treesize of output 29 [2022-12-14 11:11:55,157 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 11 treesize of output 7 [2022-12-14 11:11:55,269 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:11:55,269 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 43 treesize of output 40 [2022-12-14 11:11:55,472 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:11:55,472 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 36 treesize of output 35 [2022-12-14 11:11:55,547 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 61 treesize of output 40 [2022-12-14 11:11:55,656 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:55,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 25 [2022-12-14 11:11:55,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:55,663 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 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:55,668 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 7 treesize of output 3 [2022-12-14 11:11:56,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:11:56,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,013 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:11:56,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 56 [2022-12-14 11:11:56,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,042 INFO L321 Elim1Store]: treesize reduction 72, result has 37.4 percent of original size [2022-12-14 11:11:56,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 65 [2022-12-14 11:11:56,793 INFO L321 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2022-12-14 11:11:56,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 72 [2022-12-14 11:11:56,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2022-12-14 11:11:56,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:11:56,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,930 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:11:56,930 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 52 [2022-12-14 11:11:56,981 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-12-14 11:11:56,981 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 82 [2022-12-14 11:11:56,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-14 11:11:57,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:11:57,108 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:11:57,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 69 [2022-12-14 11:11:57,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2022-12-14 11:11:57,473 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:57,473 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 92 treesize of output 39 [2022-12-14 11:11:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:11:57,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:11:57,681 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4317 (Array Int Int)) (v_ArrVal_4318 (Array Int Int))) (= (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4318))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4317) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) 1)) is different from false [2022-12-14 11:11:57,690 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4315 (Array Int Int)) (v_ArrVal_4316 (Array Int Int)) (v_ArrVal_4317 (Array Int Int)) (v_ArrVal_4318 (Array Int Int))) (= (select |c_#valid| (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4316) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4318))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4315) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4317) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) 1)) is different from false [2022-12-14 11:11:57,706 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4312 (Array Int Int)) (v_ArrVal_4315 (Array Int Int)) (v_ArrVal_4316 (Array Int Int)) (v_ArrVal_4317 (Array Int Int)) (v_ArrVal_4318 (Array Int Int))) (= (select |c_#valid| (select (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4316) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4318))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| v_ArrVal_4312) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4315) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4317) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) 1)) is different from false [2022-12-14 11:11:57,727 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4312 (Array Int Int)) (v_ArrVal_4315 (Array Int Int)) (v_ArrVal_4316 (Array Int Int)) (v_ArrVal_4317 (Array Int Int)) (v_ArrVal_4318 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset|))) (select (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4316) .cse1 v_ArrVal_4318))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| v_ArrVal_4312) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4315) .cse1 v_ArrVal_4317) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) 1)) is different from false [2022-12-14 11:11:58,076 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4312 (Array Int Int)) (v_ArrVal_4315 (Array Int Int)) (v_ArrVal_4316 (Array Int Int)) (v_ArrVal_4317 (Array Int Int)) (v_ArrVal_4318 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse2 (select |c_#memory_$Pointer$.base| .cse1)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse4 (select .cse2 .cse3))) (select (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| .cse1 (store .cse2 .cse3 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4316) .cse4 v_ArrVal_4318))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_4312) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4315) .cse4 v_ArrVal_4317) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) 1)) is different from false [2022-12-14 11:11:58,522 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4312 (Array Int Int)) (|v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_51| Int) (v_ArrVal_4315 (Array Int Int)) (v_ArrVal_4316 (Array Int Int)) (v_ArrVal_4328 (Array Int Int)) (v_ArrVal_4317 (Array Int Int)) (v_ArrVal_4329 (Array Int Int)) (v_ArrVal_4318 (Array Int Int))) (or (= (select (store |c_#valid| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_51| 1) (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_51| v_ArrVal_4329))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_51| v_ArrVal_4328)) (.cse2 (select (select .cse1 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse3 (select .cse1 .cse2)) (.cse4 (select (select .cse6 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse5 (select .cse3 .cse4))) (select (let ((.cse0 (store (store (store .cse1 .cse2 (store .cse3 .cse4 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_51|)) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_51| v_ArrVal_4316) .cse5 v_ArrVal_4318))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store .cse6 .cse2 v_ArrVal_4312) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_51| v_ArrVal_4315) .cse5 v_ArrVal_4317) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) 1) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_51|) 0)) (not (< |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_51| |c_#StackHeapBarrier|)))) is different from false [2022-12-14 11:11:58,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533337871] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:58,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1372625110] [2022-12-14 11:11:58,526 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-12-14 11:11:58,526 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:11:58,527 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:11:58,527 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:11:58,527 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:11:58,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,543 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 [2022-12-14 11:11:58,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:11:58,574 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 [2022-12-14 11:11:58,576 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 [2022-12-14 11:11:58,580 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 [2022-12-14 11:11:58,583 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 [2022-12-14 11:11:58,586 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 [2022-12-14 11:11:58,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:11:58,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:11:58,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:58,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,608 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 36 treesize of output 23 [2022-12-14 11:11:58,612 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 [2022-12-14 11:11:58,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,617 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 36 treesize of output 23 [2022-12-14 11:11:58,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:11:58,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:11:58,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:11:58,833 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:11:58,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:11:58,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:58,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:11:58,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:11:58,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:58,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:58,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:58,983 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:58,984 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:58,985 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:58,986 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:59,040 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:11:59,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:11:59,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:11:59,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:59,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:11:59,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:11:59,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:11:59,252 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:59,253 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:59,255 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:11:59,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:11:59,300 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 21 [2022-12-14 11:11:59,307 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 11 [2022-12-14 11:11:59,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:59,340 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:11:59,340 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 28 treesize of output 34 [2022-12-14 11:11:59,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:59,361 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:11:59,361 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 28 treesize of output 30 [2022-12-14 11:11:59,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,370 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 [2022-12-14 11:11:59,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,404 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 [2022-12-14 11:11:59,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:59,424 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:11:59,424 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 28 treesize of output 34 [2022-12-14 11:11:59,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:59,449 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:11:59,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 11:11:59,498 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 11 treesize of output 7 [2022-12-14 11:11:59,504 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 15 treesize of output 1 [2022-12-14 11:11:59,509 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 11 treesize of output 7 [2022-12-14 11:11:59,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,532 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 21 treesize of output 20 [2022-12-14 11:11:59,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,544 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 21 treesize of output 20 [2022-12-14 11:11:59,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:59,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:59,620 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:59,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:59,636 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:59,636 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 15 treesize of output 19 [2022-12-14 11:11:59,653 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:59,654 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 7 [2022-12-14 11:11:59,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:59,670 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:59,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:59,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:59,720 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:59,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:59,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:59,736 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 15 treesize of output 19 [2022-12-14 11:11:59,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:59,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:59,756 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:59,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:11:59,769 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:11:59,769 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 7 [2022-12-14 11:11:59,956 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 15 treesize of output 1 [2022-12-14 11:11:59,962 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 11 treesize of output 7 [2022-12-14 11:11:59,967 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 11 treesize of output 7 [2022-12-14 11:11:59,997 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 11:11:59,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:12:00,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:00,030 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 11:12:00,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-12-14 11:12:00,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:00,071 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:12:00,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2022-12-14 11:12:00,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:00,099 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:12:00,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2022-12-14 11:12:00,112 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 15 treesize of output 1 [2022-12-14 11:12:00,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:00,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:00,203 INFO L321 Elim1Store]: treesize reduction 100, result has 24.2 percent of original size [2022-12-14 11:12:00,203 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 5 case distinctions, treesize of input 45 treesize of output 58 [2022-12-14 11:12:00,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:00,284 INFO L321 Elim1Store]: treesize reduction 54, result has 59.1 percent of original size [2022-12-14 11:12:00,284 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 5 case distinctions, treesize of input 54 treesize of output 113 [2022-12-14 11:12:00,331 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:12:00,395 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:12:03,170 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:12:03,328 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:12:03,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:12:03,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:12:03,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:03,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:12:03,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:12:03,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:03,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:12:03,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:12:03,497 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:03,498 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:03,499 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:03,500 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:03,547 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:12:03,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:12:03,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:12:03,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:12:03,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:12:03,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:12:03,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:12:03,694 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:03,695 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:03,697 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:03,760 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 11 treesize of output 7 [2022-12-14 11:12:03,764 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 15 treesize of output 1 [2022-12-14 11:12:03,768 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 11 treesize of output 7 [2022-12-14 11:12:03,816 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:12:03,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:12:03,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:03,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:03,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:12:03,926 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-12-14 11:12:03,930 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 [2022-12-14 11:12:03,933 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 [2022-12-14 11:12:03,939 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 [2022-12-14 11:12:03,943 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 [2022-12-14 11:12:03,946 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 [2022-12-14 11:12:03,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:03,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:12:03,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:03,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:03,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:12:03,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:03,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:03,971 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 36 treesize of output 23 [2022-12-14 11:12:03,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:03,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:03,977 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 36 treesize of output 23 [2022-12-14 11:12:03,982 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 [2022-12-14 11:12:03,983 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:12:12,665 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12534#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|))' at error location [2022-12-14 11:12:12,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:12:12,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:12:12,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29] total 58 [2022-12-14 11:12:12,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001770869] [2022-12-14 11:12:12,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:12:12,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-14 11:12:12,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:12:12,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-14 11:12:12,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=8272, Unknown=93, NotChecked=1134, Total=9900 [2022-12-14 11:12:12,667 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 60 states, 50 states have (on average 1.74) internal successors, (87), 51 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:12:16,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:12:16,259 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2022-12-14 11:12:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 11:12:16,259 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 50 states have (on average 1.74) internal successors, (87), 51 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 50 [2022-12-14 11:12:16,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:12:16,260 INFO L225 Difference]: With dead ends: 127 [2022-12-14 11:12:16,260 INFO L226 Difference]: Without dead ends: 127 [2022-12-14 11:12:16,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 3619 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=644, Invalid=10841, Unknown=95, NotChecked=1302, Total=12882 [2022-12-14 11:12:16,261 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 902 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 50 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:12:16,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 519 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1622 Invalid, 3 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 11:12:16,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-14 11:12:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 79. [2022-12-14 11:12:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 73 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:12:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2022-12-14 11:12:16,264 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 50 [2022-12-14 11:12:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:12:16,264 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2022-12-14 11:12:16,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 50 states have (on average 1.74) internal successors, (87), 51 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:12:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2022-12-14 11:12:16,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 11:12:16,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:12:16,264 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:12:16,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 11:12:16,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-14 11:12:16,466 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:12:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:12:16,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1122294608, now seen corresponding path program 1 times [2022-12-14 11:12:16,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:12:16,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544970090] [2022-12-14 11:12:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:16,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:12:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:12:18,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:12:18,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544970090] [2022-12-14 11:12:18,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544970090] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:18,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086984541] [2022-12-14 11:12:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:18,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:12:18,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:12:18,933 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:12:18,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 11:12:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:19,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 137 conjunts are in the unsatisfiable core [2022-12-14 11:12:19,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:12:19,134 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 [2022-12-14 11:12:19,140 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 5 treesize of output 3 [2022-12-14 11:12:19,248 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:12:19,248 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 [2022-12-14 11:12:19,398 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 11 treesize of output 7 [2022-12-14 11:12:19,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:19,515 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:12:19,515 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 16 treesize of output 14 [2022-12-14 11:12:19,656 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 11 treesize of output 7 [2022-12-14 11:12:19,756 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 14 treesize of output 16 [2022-12-14 11:12:19,935 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:12:19,935 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 27 treesize of output 28 [2022-12-14 11:12:20,002 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 48 treesize of output 35 [2022-12-14 11:12:20,085 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:20,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 20 [2022-12-14 11:12:20,089 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 5 treesize of output 3 [2022-12-14 11:12:20,091 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 7 treesize of output 3 [2022-12-14 11:12:20,100 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 [2022-12-14 11:12:20,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:12:20,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,451 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:12:20,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 49 [2022-12-14 11:12:20,469 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 11:12:20,469 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 15 treesize of output 15 [2022-12-14 11:12:21,006 INFO L321 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2022-12-14 11:12:21,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 107 treesize of output 67 [2022-12-14 11:12:21,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-12-14 11:12:21,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 32 [2022-12-14 11:12:21,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,143 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:12:21,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 58 [2022-12-14 11:12:21,181 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-12-14 11:12:21,181 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 82 [2022-12-14 11:12:21,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-12-14 11:12:21,310 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:12:21,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 69 [2022-12-14 11:12:21,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,317 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 29 treesize of output 32 [2022-12-14 11:12:21,589 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-12-14 11:12:21,589 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 97 treesize of output 51 [2022-12-14 11:12:21,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2022-12-14 11:12:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:12:21,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:12:24,494 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse9 (select |c_#memory_$Pointer$.base| .cse11)) (.cse10 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse11 (store .cse9 .cse10 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|))) (.cse6 (store |c_#memory_$Pointer$.offset| .cse11 (store (select |c_#memory_$Pointer$.offset| .cse11) .cse10 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (.cse5 (select .cse9 .cse10))) (and (forall ((v_ArrVal_4571 (Array Int Int)) (v_ArrVal_4572 (Array Int Int)) (v_ArrVal_4573 (Array Int Int))) (let ((.cse0 (store (store .cse6 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4571) .cse5 v_ArrVal_4573))) (let ((.cse2 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (forall ((v_ArrVal_4574 (Array Int Int))) (let ((.cse3 (store (store .cse4 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4572) .cse5 v_ArrVal_4574))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (<= (+ (select (select .cse0 .cse1) .cse2) 12) (select |c_#length| (select (select .cse3 .cse1) .cse2)))))) (not (<= 0 .cse2)))))) (forall ((v_ArrVal_4571 (Array Int Int)) (v_ArrVal_4572 (Array Int Int)) (v_ArrVal_4573 (Array Int Int))) (let ((.cse8 (store (store .cse6 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4571) .cse5 v_ArrVal_4573))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (<= 0 .cse7)) (forall ((v_ArrVal_4574 (Array Int Int))) (<= 0 (+ (select (select .cse8 (select (select (store (store .cse4 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4572) .cse5 v_ArrVal_4574) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) .cse7) 8))))))))))) is different from false [2022-12-14 11:12:25,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1357 treesize of output 1157 [2022-12-14 11:12:26,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086984541] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:26,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1471629455] [2022-12-14 11:12:26,595 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-12-14 11:12:26,595 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:12:26,595 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:12:26,595 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:12:26,595 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:12:26,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,611 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 [2022-12-14 11:12:26,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:12:26,638 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 [2022-12-14 11:12:26,641 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 [2022-12-14 11:12:26,647 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 [2022-12-14 11:12:26,650 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 [2022-12-14 11:12:26,653 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 [2022-12-14 11:12:26,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:26,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:12:26,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:12:26,673 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 13 treesize of output 9 [2022-12-14 11:12:26,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,679 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 36 treesize of output 23 [2022-12-14 11:12:26,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-12-14 11:12:26,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:12:26,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:12:26,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:12:26,839 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:12:26,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:12:26,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:12:26,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:12:26,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:12:26,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:26,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:12:26,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:12:26,944 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:26,946 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:26,947 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:26,991 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:12:26,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:12:27,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:12:27,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:12:27,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:12:27,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:12:27,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:12:27,138 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:27,139 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:27,140 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:27,169 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 21 [2022-12-14 11:12:27,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:12:27,188 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 11 [2022-12-14 11:12:27,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,213 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 [2022-12-14 11:12:27,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,229 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:12:27,229 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 28 treesize of output 34 [2022-12-14 11:12:27,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,249 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:12:27,250 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 28 treesize of output 30 [2022-12-14 11:12:27,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,299 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:12:27,299 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 28 treesize of output 30 [2022-12-14 11:12:27,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,310 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 [2022-12-14 11:12:27,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,326 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:12:27,326 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 28 treesize of output 34 [2022-12-14 11:12:27,373 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 11 treesize of output 7 [2022-12-14 11:12:27,379 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 11 treesize of output 7 [2022-12-14 11:12:27,386 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 15 treesize of output 1 [2022-12-14 11:12:27,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,416 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 21 treesize of output 20 [2022-12-14 11:12:27,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:27,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,442 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 21 treesize of output 20 [2022-12-14 11:12:27,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,551 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:27,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:12:27,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,567 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:27,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:12:27,582 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:27,582 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 7 [2022-12-14 11:12:27,598 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:27,598 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 15 treesize of output 19 [2022-12-14 11:12:27,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,694 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:27,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:12:27,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,713 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:27,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:12:27,729 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:27,730 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 7 [2022-12-14 11:12:27,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:27,751 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 15 treesize of output 19 [2022-12-14 11:12:27,911 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 15 treesize of output 1 [2022-12-14 11:12:27,918 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 11 treesize of output 7 [2022-12-14 11:12:27,925 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 11 treesize of output 7 [2022-12-14 11:12:27,956 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 11:12:27,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:12:27,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:27,992 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 11:12:27,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-12-14 11:12:28,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:28,030 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:12:28,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2022-12-14 11:12:28,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:28,060 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-12-14 11:12:28,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2022-12-14 11:12:28,079 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 15 treesize of output 1 [2022-12-14 11:12:28,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:28,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:28,166 INFO L321 Elim1Store]: treesize reduction 100, result has 24.2 percent of original size [2022-12-14 11:12:28,166 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 5 case distinctions, treesize of input 45 treesize of output 58 [2022-12-14 11:12:28,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:28,255 INFO L321 Elim1Store]: treesize reduction 54, result has 59.1 percent of original size [2022-12-14 11:12:28,255 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 5 case distinctions, treesize of input 54 treesize of output 113 [2022-12-14 11:12:28,280 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:12:28,301 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:12:30,614 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:12:30,766 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:12:30,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:12:30,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:12:30,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:12:30,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:12:30,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:12:30,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:12:30,966 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:30,967 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:30,968 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:31,017 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:12:31,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:12:31,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:12:31,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:12:31,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:12:31,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:12:31,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:12:31,190 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:31,191 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:31,193 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:31,241 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 21 [2022-12-14 11:12:31,250 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 11 [2022-12-14 11:12:31,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:12:31,300 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:12:31,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:12:31,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:31,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:31,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:12:31,423 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 65 for LOIs [2022-12-14 11:12:31,440 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 [2022-12-14 11:12:31,454 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 [2022-12-14 11:12:31,494 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 [2022-12-14 11:12:31,509 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 15 treesize of output 1 [2022-12-14 11:12:31,515 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 [2022-12-14 11:12:31,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:31,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:12:31,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:31,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:12:31,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:31,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:31,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:31,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-12-14 11:12:31,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:31,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:31,631 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 36 treesize of output 23 [2022-12-14 11:12:31,646 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 [2022-12-14 11:12:31,662 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:12:42,616 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13076#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (or (not (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 12) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|))) (not (<= 0 (+ |ULTIMATE.start_main_~ptr~0#1.offset| 8)))) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|))' at error location [2022-12-14 11:12:42,616 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:12:42,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:12:42,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30] total 59 [2022-12-14 11:12:42,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047963900] [2022-12-14 11:12:42,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:12:42,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-12-14 11:12:42,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:12:42,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-12-14 11:12:42,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=9870, Unknown=48, NotChecked=200, Total=10506 [2022-12-14 11:12:42,618 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand has 61 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 52 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:12:48,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:12:48,143 INFO L93 Difference]: Finished difference Result 142 states and 151 transitions. [2022-12-14 11:12:48,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 11:12:48,143 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 52 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 50 [2022-12-14 11:12:48,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:12:48,144 INFO L225 Difference]: With dead ends: 142 [2022-12-14 11:12:48,144 INFO L226 Difference]: Without dead ends: 142 [2022-12-14 11:12:48,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=737, Invalid=13981, Unknown=48, NotChecked=240, Total=15006 [2022-12-14 11:12:48,145 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1250 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:12:48,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 560 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2001 Invalid, 1 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 11:12:48,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-12-14 11:12:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 81. [2022-12-14 11:12:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 75 states have internal predecessors, (81), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:12:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2022-12-14 11:12:48,146 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 50 [2022-12-14 11:12:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:12:48,146 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2022-12-14 11:12:48,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 52 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:12:48,147 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2022-12-14 11:12:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 11:12:48,147 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:12:48,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:12:48,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 11:12:48,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-14 11:12:48,348 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:12:48,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:12:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash 431393510, now seen corresponding path program 1 times [2022-12-14 11:12:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:12:48,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368393208] [2022-12-14 11:12:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:12:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:12:50,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:12:50,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368393208] [2022-12-14 11:12:50,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368393208] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:50,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988806606] [2022-12-14 11:12:50,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:50,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:12:50,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:12:50,659 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:12:50,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 11:12:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:50,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 122 conjunts are in the unsatisfiable core [2022-12-14 11:12:50,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:12:50,866 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 [2022-12-14 11:12:50,875 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 5 treesize of output 3 [2022-12-14 11:12:51,006 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:12:51,006 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 [2022-12-14 11:12:51,150 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 11 treesize of output 7 [2022-12-14 11:12:51,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:51,288 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:12:51,288 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 16 treesize of output 14 [2022-12-14 11:12:51,460 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 11 treesize of output 7 [2022-12-14 11:12:51,596 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:12:51,596 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 33 [2022-12-14 11:12:51,810 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:12:51,810 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 27 treesize of output 28 [2022-12-14 11:12:51,913 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 48 treesize of output 35 [2022-12-14 11:12:52,029 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:52,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 20 [2022-12-14 11:12:52,033 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 7 treesize of output 3 [2022-12-14 11:12:52,036 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 5 treesize of output 3 [2022-12-14 11:12:52,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:52,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:12:52,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:52,297 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:12:52,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 49 [2022-12-14 11:12:52,312 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 11:12:52,312 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 15 treesize of output 15 [2022-12-14 11:12:52,883 INFO L321 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2022-12-14 11:12:52,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 94 treesize of output 58 [2022-12-14 11:12:52,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:52,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2022-12-14 11:12:52,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:53,000 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:12:53,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 45 [2022-12-14 11:12:53,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:53,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:12:53,041 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-12-14 11:12:53,041 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 62 [2022-12-14 11:12:53,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:53,049 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 22 treesize of output 24 [2022-12-14 11:12:53,154 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:12:53,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 49 [2022-12-14 11:12:53,162 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 14 treesize of output 16 [2022-12-14 11:12:53,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:12:53,462 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:53,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 24 [2022-12-14 11:12:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:12:53,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:12:53,478 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4829 (Array Int Int)) (v_ArrVal_4830 (Array Int Int))) (not (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4829))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse0 (select (select .cse1 .cse0) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4830) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) is different from false [2022-12-14 11:12:53,484 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4828 (Array Int Int)) (v_ArrVal_4829 (Array Int Int)) (v_ArrVal_4830 (Array Int Int)) (v_ArrVal_4827 (Array Int Int))) (not (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4827) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4829))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select .cse0 .cse1) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4828) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4830) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) .cse1))))) is different from false [2022-12-14 11:12:53,496 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4828 (Array Int Int)) (v_ArrVal_4829 (Array Int Int)) (v_ArrVal_4830 (Array Int Int)) (v_ArrVal_4824 (Array Int Int)) (v_ArrVal_4827 (Array Int Int))) (not (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4827) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4829))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select .cse0 .cse1) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| v_ArrVal_4824) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4828) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4830) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) .cse1))))) is different from false [2022-12-14 11:12:53,732 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4828 (Array Int Int)) (v_ArrVal_4829 (Array Int Int)) (v_ArrVal_4830 (Array Int Int)) (v_ArrVal_4824 (Array Int Int)) (v_ArrVal_4827 (Array Int Int))) (not (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|))) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset|))) (let ((.cse1 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store .cse3 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4827) .cse2 v_ArrVal_4829))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse0 (select (select .cse1 .cse0) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4824) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4828) .cse2 v_ArrVal_4830) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))))) is different from false [2022-12-14 11:12:53,742 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4828 (Array Int Int)) (v_ArrVal_4829 (Array Int Int)) (v_ArrVal_4830 (Array Int Int)) (v_ArrVal_4824 (Array Int Int)) (v_ArrVal_4827 (Array Int Int))) (not (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse4 (select |c_#memory_$Pointer$.base| .cse2)) (.cse5 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse3 (select .cse4 .cse5))) (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| .cse2 (store .cse4 .cse5 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4827) .cse3 v_ArrVal_4829))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select .cse0 .cse1) (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_4824) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4828) .cse3 v_ArrVal_4830) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) .cse1)))))))) is different from false [2022-12-14 11:12:54,098 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_59| Int) (v_ArrVal_4839 (Array Int Int)) (v_ArrVal_4828 (Array Int Int)) (v_ArrVal_4829 (Array Int Int)) (v_ArrVal_4840 (Array Int Int)) (v_ArrVal_4830 (Array Int Int)) (v_ArrVal_4824 (Array Int Int)) (v_ArrVal_4827 (Array Int Int))) (or (not (< |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_59| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_59|) 0)) (not (let ((.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_59| v_ArrVal_4839))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_59| v_ArrVal_4840)) (.cse3 (select (select .cse5 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse6 (select .cse5 .cse3)) (.cse7 (select (select .cse2 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse4 (select .cse6 .cse7))) (let ((.cse1 (store (store (store .cse5 .cse3 (store .cse6 .cse7 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_59|)) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_59| v_ArrVal_4827) .cse4 v_ArrVal_4829))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse0 (select (select .cse1 .cse0) (select (select (store (store (store .cse2 .cse3 v_ArrVal_4824) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_59| v_ArrVal_4828) .cse4 v_ArrVal_4830) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))))))))) is different from false [2022-12-14 11:12:54,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988806606] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:54,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [150956120] [2022-12-14 11:12:54,101 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-12-14 11:12:54,101 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:12:54,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:12:54,102 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:12:54,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:12:54,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,118 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 [2022-12-14 11:12:54,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:12:54,147 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 [2022-12-14 11:12:54,150 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 [2022-12-14 11:12:54,155 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 [2022-12-14 11:12:54,158 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 [2022-12-14 11:12:54,161 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 [2022-12-14 11:12:54,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:54,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:12:54,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:12:54,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,185 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 36 treesize of output 23 [2022-12-14 11:12:54,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,192 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 36 treesize of output 23 [2022-12-14 11:12:54,197 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 [2022-12-14 11:12:54,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:12:54,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:12:54,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2022-12-14 11:12:54,354 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:12:54,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:12:54,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:12:54,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:12:54,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:12:54,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:12:54,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:12:54,504 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:54,506 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:54,507 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:54,556 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:12:54,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:12:54,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:12:54,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:12:54,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:12:54,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2022-12-14 11:12:54,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:12:54,724 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:54,725 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:54,727 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:54,727 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:12:54,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:12:54,774 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 21 [2022-12-14 11:12:54,784 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 11 [2022-12-14 11:12:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,810 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 [2022-12-14 11:12:54,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:54,831 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:12:54,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 34 [2022-12-14 11:12:54,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:54,856 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:12:54,857 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 28 treesize of output 30 [2022-12-14 11:12:54,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:54,914 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:12:54,915 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 28 treesize of output 34 [2022-12-14 11:12:54,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,927 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 [2022-12-14 11:12:54,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:54,948 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:12:54,949 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 28 treesize of output 30 [2022-12-14 11:12:55,008 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 11 treesize of output 7 [2022-12-14 11:12:55,013 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 15 treesize of output 1 [2022-12-14 11:12:55,018 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 11 treesize of output 7 [2022-12-14 11:12:55,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,040 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 21 treesize of output 20 [2022-12-14 11:12:55,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,055 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 21 treesize of output 20 [2022-12-14 11:12:55,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:55,109 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:55,109 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 15 treesize of output 19 [2022-12-14 11:12:55,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:55,133 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:55,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:12:55,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:55,150 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:55,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:12:55,160 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:55,160 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 7 [2022-12-14 11:12:55,197 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:55,198 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 7 [2022-12-14 11:12:55,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:55,212 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:55,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:12:55,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:55,232 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 15 treesize of output 19 [2022-12-14 11:12:55,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:55,251 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:12:55,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:12:55,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:55,563 INFO L321 Elim1Store]: treesize reduction 103, result has 36.0 percent of original size [2022-12-14 11:12:55,563 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 356 treesize of output 368 [2022-12-14 11:12:55,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:55,675 INFO L321 Elim1Store]: treesize reduction 95, result has 49.7 percent of original size [2022-12-14 11:12:55,676 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 9 case distinctions, treesize of input 348 treesize of output 405 [2022-12-14 11:12:55,708 INFO L321 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2022-12-14 11:12:55,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 320 treesize of output 312 [2022-12-14 11:13:14,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:13:14,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:14,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:13:14,698 INFO L321 Elim1Store]: treesize reduction 65, result has 20.7 percent of original size [2022-12-14 11:13:14,699 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 6 case distinctions, treesize of input 32776 treesize of output 28979 [2022-12-14 11:13:15,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:13:15,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:15,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:13:15,535 INFO L321 Elim1Store]: treesize reduction 60, result has 26.8 percent of original size [2022-12-14 11:13:15,536 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 6 case distinctions, treesize of input 31892 treesize of output 29847 [2022-12-14 11:13:16,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:16,743 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 31115 treesize of output 30327 [2022-12-14 11:13:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:51,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:13:51,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:13:51,794 INFO L321 Elim1Store]: treesize reduction 62, result has 38.6 percent of original size [2022-12-14 11:13:51,796 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 7 case distinctions, treesize of input 44234 treesize of output 42347 [2022-12-14 11:13:53,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:53,291 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 43278 treesize of output 42138 [2022-12-14 11:13:54,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:54,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:13:54,104 INFO L321 Elim1Store]: treesize reduction 63, result has 10.0 percent of original size [2022-12-14 11:13:54,105 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 4 case distinctions, treesize of input 43300 treesize of output 38977 [2022-12-14 11:14:49,390 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7848 conjuctions. This might take some time... [2022-12-14 11:15:08,116 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 7848 conjuctions. [2022-12-14 11:15:08,527 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7848 conjuctions. This might take some time... [2022-12-14 11:15:27,107 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 7848 conjuctions. [2022-12-14 11:15:28,943 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 [2022-12-14 11:15:29,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:15:29,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:15:43,746 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7848 conjuctions. This might take some time... [2022-12-14 11:16:02,507 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 7848 conjuctions. [2022-12-14 11:16:02,990 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:16:02,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:16:03,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:16:03,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:16:03,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:16:03,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:16:03,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:16:03,155 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:16:03,156 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:16:03,157 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:16:03,210 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:16:03,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:16:03,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:16:03,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:16:03,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 11:16:03,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:16:03,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:16:03,343 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:16:03,344 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:16:03,399 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 11 [2022-12-14 11:16:03,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 11:16:03,414 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 21 [2022-12-14 11:16:03,461 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 11:16:03,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 229 [2022-12-14 11:16:03,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:03,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:03,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 11:16:03,595 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-12-14 11:16:03,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:16:03,602 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 [2022-12-14 11:16:03,607 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 [2022-12-14 11:16:03,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:16:03,616 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 [2022-12-14 11:16:03,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:03,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:03,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:16:03,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:03,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:16:03,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:03,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:03,643 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 36 treesize of output 23 [2022-12-14 11:16:03,647 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 [2022-12-14 11:16:03,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:03,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:03,652 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 36 treesize of output 23 [2022-12-14 11:16:03,654 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:16:26,369 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 491 DAG size of output: 160 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:16:30,037 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13647#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 1 |ULTIMATE.start_main_~count~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= 0 (+ |ULTIMATE.start_dll_circular_insert_~index#1| 1)) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~index#1|) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (<= |ULTIMATE.start_main_~count~0#1| 1) (<= |ULTIMATE.start_dll_circular_insert_#in~index#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|))' at error location [2022-12-14 11:16:30,037 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:16:30,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:16:30,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 31] total 58 [2022-12-14 11:16:30,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413620441] [2022-12-14 11:16:30,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:16:30,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-14 11:16:30,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-14 11:16:30,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=7633, Unknown=69, NotChecked=1086, Total=9120 [2022-12-14 11:16:30,039 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 59 states, 50 states have (on average 1.64) internal successors, (82), 50 states have internal predecessors, (82), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:16:33,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:33,281 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2022-12-14 11:16:33,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 11:16:33,282 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 50 states have (on average 1.64) internal successors, (82), 50 states have internal predecessors, (82), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2022-12-14 11:16:33,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:33,282 INFO L225 Difference]: With dead ends: 100 [2022-12-14 11:16:33,282 INFO L226 Difference]: Without dead ends: 100 [2022-12-14 11:16:33,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 3459 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=641, Invalid=11302, Unknown=71, NotChecked=1326, Total=13340 [2022-12-14 11:16:33,283 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 564 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:33,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 731 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1802 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 11:16:33,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-12-14 11:16:33,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81. [2022-12-14 11:16:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 75 states have internal predecessors, (80), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:16:33,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2022-12-14 11:16:33,285 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 51 [2022-12-14 11:16:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:33,285 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2022-12-14 11:16:33,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 50 states have (on average 1.64) internal successors, (82), 50 states have internal predecessors, (82), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 11:16:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2022-12-14 11:16:33,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 11:16:33,286 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:33,286 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:33,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 11:16:33,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-14 11:16:33,487 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-12-14 11:16:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash 488329618, now seen corresponding path program 1 times [2022-12-14 11:16:33,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:33,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032890617] [2022-12-14 11:16:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:33,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 11:16:36,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:36,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032890617] [2022-12-14 11:16:36,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032890617] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:16:36,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827778023] [2022-12-14 11:16:36,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:36,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:36,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:16:36,467 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:16:36,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb399e03-4aec-44cd-bd72-e3b9885c2fd1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 11:16:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:36,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 162 conjunts are in the unsatisfiable core [2022-12-14 11:16:36,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:36,673 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 [2022-12-14 11:16:36,725 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 5 treesize of output 3 [2022-12-14 11:16:36,834 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:16:36,834 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 [2022-12-14 11:16:36,960 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 11 treesize of output 7 [2022-12-14 11:16:37,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:37,109 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:16:37,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 22 treesize of output 29 [2022-12-14 11:16:37,321 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 11 treesize of output 7 [2022-12-14 11:16:37,470 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:16:37,470 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 43 treesize of output 40 [2022-12-14 11:16:37,756 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:16:37,757 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 36 treesize of output 35 [2022-12-14 11:16:37,897 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 61 treesize of output 40 [2022-12-14 11:16:38,007 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:16:38,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 25 [2022-12-14 11:16:38,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 11:16:38,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:38,016 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 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:16:38,146 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 [2022-12-14 11:16:38,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:38,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:16:38,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:38,281 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:16:38,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 56 [2022-12-14 11:16:38,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:38,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:38,305 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-12-14 11:16:38,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 33 [2022-12-14 11:16:39,025 INFO L321 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2022-12-14 11:16:39,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 129 treesize of output 77 [2022-12-14 11:16:39,033 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 20 treesize of output 22 [2022-12-14 11:16:39,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:39,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-12-14 11:16:39,174 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 [2022-12-14 11:16:39,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:39,198 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:16:39,198 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 54 [2022-12-14 11:16:39,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:39,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:39,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-12-14 11:16:39,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:39,248 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:16:39,248 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 86 [2022-12-14 11:16:39,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:39,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:39,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 54 [2022-12-14 11:16:39,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:39,260 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 37 treesize of output 36 [2022-12-14 11:16:39,405 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 11:16:39,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 69 [2022-12-14 11:16:39,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 11:16:39,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:39,421 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 48 treesize of output 47 [2022-12-14 11:16:39,876 INFO L321 Elim1Store]: treesize reduction 49, result has 5.8 percent of original size [2022-12-14 11:16:39,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 66 [2022-12-14 11:16:39,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:39,883 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 11:16:39,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 25 [2022-12-14 11:16:39,954 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 [2022-12-14 11:16:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:16:40,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:16:40,171 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5091 (Array Int Int)) (|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int) (v_ArrVal_5092 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_5092)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_5091) (select (select .cse0 .cse1) .cse2)) (+ (select (select .cse3 .cse1) .cse2) 8)))))) is different from false [2022-12-14 11:16:40,185 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5089 (Array Int Int)) (v_ArrVal_5091 (Array Int Int)) (|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int) (v_ArrVal_5090 (Array Int Int)) (v_ArrVal_5092 (Array Int Int)) (v_ArrVal_5087 Int)) (= (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5090) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_5092)) (.cse0 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5089))) (store .cse4 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_ArrVal_5087)) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_5091) (select (select .cse0 .cse1) .cse2)) (+ (select (select .cse3 .cse1) .cse2) 8)))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2022-12-14 11:16:40,200 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5086 Int) (v_ArrVal_5089 (Array Int Int)) (v_ArrVal_5091 (Array Int Int)) (|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int) (v_ArrVal_5090 (Array Int Int)) (v_ArrVal_5092 (Array Int Int)) (v_ArrVal_5087 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5090) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_5092)) (.cse0 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5089))) (store .cse4 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 4) v_ArrVal_5086) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_ArrVal_5087)) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_5091) (select (select .cse0 .cse1) .cse2)) (+ (select (select .cse3 .cse1) .cse2) 8)))))) is different from false [2022-12-14 11:16:40,215 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5086 Int) (v_ArrVal_5079 (Array Int Int)) (v_ArrVal_5089 (Array Int Int)) (v_ArrVal_5091 (Array Int Int)) (v_ArrVal_5090 (Array Int Int)) (|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int) (v_ArrVal_5092 (Array Int Int)) (v_ArrVal_5087 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse4 (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5090) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_5092)) (.cse1 (let ((.cse5 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5089))) (store .cse5 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|))))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| v_ArrVal_5079))) (store .cse0 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 4) v_ArrVal_5086) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_ArrVal_5087))) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_5091) (select (select .cse1 .cse2) .cse3)) (+ 8 (select (select .cse4 .cse2) .cse3))))))) is different from false [2022-12-14 11:16:40,248 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5086 Int) (v_ArrVal_5079 (Array Int Int)) (v_ArrVal_5089 (Array Int Int)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_69| Int) (v_ArrVal_5091 (Array Int Int)) (v_ArrVal_5090 (Array Int Int)) (v_ArrVal_5092 (Array Int Int)) (v_ArrVal_5087 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset|))) (let ((.cse5 (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5090) .cse1 v_ArrVal_5092)) (.cse2 (let ((.cse6 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5089))) (store .cse6 .cse1 (store (select .cse6 .cse1) (+ |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_69| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| v_ArrVal_5079))) (store .cse0 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 4) v_ArrVal_5086) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_ArrVal_5087))) .cse1 v_ArrVal_5091) (select (select .cse2 .cse3) .cse4)) (+ 8 (select (select .cse5 .cse3) .cse4)))))))) is different from false [2022-12-14 11:16:40,267 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5086 Int) (v_ArrVal_5079 (Array Int Int)) (v_ArrVal_5089 (Array Int Int)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_69| Int) (v_ArrVal_5091 (Array Int Int)) (v_ArrVal_5090 (Array Int Int)) (v_ArrVal_5092 (Array Int Int)) (v_ArrVal_5087 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse7 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|))) (let ((.cse1 (select .cse7 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset|))) (let ((.cse5 (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5090) .cse1 v_ArrVal_5092)) (.cse2 (let ((.cse6 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store .cse7 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5089))) (store .cse6 .cse1 (store (select .cse6 .cse1) (+ |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_69| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_5079))) (store .cse0 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 4) v_ArrVal_5086) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_ArrVal_5087))) .cse1 v_ArrVal_5091) (select (select .cse2 .cse3) .cse4)) (+ (select (select .cse5 .cse3) .cse4) 8)))))))) is different from false [2022-12-14 11:16:40,288 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5086 Int) (v_ArrVal_5079 (Array Int Int)) (v_ArrVal_5089 (Array Int Int)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_69| Int) (v_ArrVal_5091 (Array Int Int)) (v_ArrVal_5090 (Array Int Int)) (v_ArrVal_5092 (Array Int Int)) (v_ArrVal_5087 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse8 (select |c_#memory_$Pointer$.base| .cse1)) (.cse9 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse2 (select .cse8 .cse9))) (let ((.cse6 (store (store (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) .cse9 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5090) .cse2 v_ArrVal_5092)) (.cse3 (let ((.cse7 (store (store |c_#memory_$Pointer$.base| .cse1 (store .cse8 .cse9 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_5089))) (store .cse7 .cse2 (store (select .cse7 .cse2) (+ |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_69| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (let ((.cse0 (store |c_#memory_int| .cse1 v_ArrVal_5079))) (store .cse0 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 4) v_ArrVal_5086) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_ArrVal_5087))) .cse2 v_ArrVal_5091) (select (select .cse3 .cse4) .cse5)) (+ (select (select .cse6 .cse4) .cse5) 8))))))))) is different from false [2022-12-14 11:16:40,306 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5086 Int) (v_ArrVal_5079 (Array Int Int)) (v_ArrVal_5089 (Array Int Int)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_69| Int) (v_ArrVal_5091 (Array Int Int)) (v_ArrVal_5090 (Array Int Int)) (v_ArrVal_5092 (Array Int Int)) (v_ArrVal_5087 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse8 (select |c_#memory_$Pointer$.base| .cse1)) (.cse9 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse2 (select .cse8 .cse9))) (let ((.cse6 (store (store (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) .cse9 |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.offset|)) |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base| v_ArrVal_5090) .cse2 v_ArrVal_5092)) (.cse3 (let ((.cse7 (store (store |c_#memory_$Pointer$.base| .cse1 (store .cse8 .cse9 |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base|)) |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base| v_ArrVal_5089))) (store .cse7 .cse2 (store (select .cse7 .cse2) (+ |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_69| 4) |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base|))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (let ((.cse0 (store |c_#memory_int| .cse1 v_ArrVal_5079))) (store .cse0 |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base| (store (store (select .cse0 |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base|) (+ |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.offset| 4) v_ArrVal_5086) |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.offset| v_ArrVal_5087))) .cse2 v_ArrVal_5091) (select (select .cse3 .cse4) .cse5)) (+ (select (select .cse6 .cse4) .cse5) 8))))))))) is different from false [2022-12-14 11:16:40,413 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:40,413 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 1 case distinctions, treesize of input 674 treesize of output 667 [2022-12-14 11:16:40,436 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:40,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30720 treesize of output 29720 [2022-12-14 11:16:40,461 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 29376 treesize of output 25088 [2022-12-14 11:16:40,493 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 41396 treesize of output 38180 [2022-12-14 11:16:46,668 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 4547 treesize of output 4279 [2022-12-14 11:22:15,850 WARN L233 SmtUtils]: Spent 5.49m on a formula simplification that was a NOOP. DAG size: 354 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 11:22:15,850 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:22:15,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 27973 treesize of output 37915