./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:54:53,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:54:53,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:54:53,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:54:53,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:54:53,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:54:53,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:54:53,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:54:53,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:54:53,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:54:53,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:54:53,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:54:53,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:54:53,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:54:53,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:54:53,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:54:53,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:54:53,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:54:53,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:54:53,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:54:53,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:54:53,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:54:53,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:54:53,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:54:53,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:54:53,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:54:53,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:54:53,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:54:53,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:54:53,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:54:53,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:54:53,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:54:53,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:54:53,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:54:53,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:54:53,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:54:53,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:54:53,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:54:53,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:54:53,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:54:53,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:54:53,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:54:53,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:54:53,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:54:53,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:54:53,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:54:53,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:54:53,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:54:53,240 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:54:53,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:54:53,240 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:54:53,240 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:54:53,240 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:54:53,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:54:53,241 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:54:53,241 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:54:53,241 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:54:53,241 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:54:53,242 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:54:53,242 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:54:53,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:54:53,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:54:53,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:54:53,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:54:53,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:54:53,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:54:53,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:54:53,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:54:53,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:54:53,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:54:53,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:54:53,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:54:53,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:54:53,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:54:53,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:54:53,246 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:54:53,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:54:53,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:54:53,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:54:53,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:54:53,251 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 [2021-11-25 18:54:53,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:54:53,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:54:53,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:54:53,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:54:53,548 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:54:53,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2021-11-25 18:54:53,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/data/506e1fa7d/f0f5b95800334a96a194394cd01c1646/FLAG2131d54eb [2021-11-25 18:54:54,385 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:54:54,386 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2021-11-25 18:54:54,435 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/data/506e1fa7d/f0f5b95800334a96a194394cd01c1646/FLAG2131d54eb [2021-11-25 18:54:54,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/data/506e1fa7d/f0f5b95800334a96a194394cd01c1646 [2021-11-25 18:54:54,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:54:54,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:54:54,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:54:54,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:54:54,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:54:54,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:54:54" (1/1) ... [2021-11-25 18:54:54,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@208df3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:54, skipping insertion in model container [2021-11-25 18:54:54,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:54:54" (1/1) ... [2021-11-25 18:54:54,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:54:55,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:54:55,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2021-11-25 18:54:55,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2021-11-25 18:54:56,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,105 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,108 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,124 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,125 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,127 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,127 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,129 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,130 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,414 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:54:56,415 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:54:56,416 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:54:56,417 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:54:56,419 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:54:56,419 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:54:56,420 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:54:56,421 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:54:56,421 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:54:56,422 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:54:56,531 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:54:56,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:54:56,571 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:54:56,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2021-11-25 18:54:56,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2021-11-25 18:54:56,641 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,641 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,642 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,642 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,643 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,663 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,667 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,667 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,669 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,669 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,670 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,670 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:54:56,741 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:54:56,751 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:54:56,754 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:54:56,755 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:54:56,756 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:54:56,763 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:54:56,763 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:54:56,764 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:54:56,765 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:54:56,765 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:54:56,832 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:54:56,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:54:57,135 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:54:57,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57 WrapperNode [2021-11-25 18:54:57,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:54:57,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:54:57,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:54:57,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:54:57,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57" (1/1) ... [2021-11-25 18:54:57,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57" (1/1) ... [2021-11-25 18:54:57,270 INFO L137 Inliner]: procedures = 679, calls = 1046, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 225 [2021-11-25 18:54:57,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:54:57,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:54:57,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:54:57,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:54:57,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57" (1/1) ... [2021-11-25 18:54:57,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57" (1/1) ... [2021-11-25 18:54:57,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57" (1/1) ... [2021-11-25 18:54:57,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57" (1/1) ... [2021-11-25 18:54:57,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57" (1/1) ... [2021-11-25 18:54:57,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57" (1/1) ... [2021-11-25 18:54:57,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57" (1/1) ... [2021-11-25 18:54:57,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:54:57,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:54:57,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:54:57,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:54:57,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57" (1/1) ... [2021-11-25 18:54:57,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:54:57,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:54:57,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:54:57,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:54:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-25 18:54:57,460 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-25 18:54:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2021-11-25 18:54:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2021-11-25 18:54:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:54:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:54:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:54:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:54:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-25 18:54:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-25 18:54:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:54:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2021-11-25 18:54:57,463 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2021-11-25 18:54:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:54:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:54:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:54:57,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:54:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2021-11-25 18:54:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2021-11-25 18:54:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:54:57,465 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:54:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:54:57,465 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:54:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:54:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:54:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:54:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 18:54:57,466 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 18:54:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-11-25 18:54:57,467 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-11-25 18:54:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:54:57,806 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:54:57,808 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:54:58,219 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:54:58,373 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:54:58,374 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 18:54:58,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:54:58 BoogieIcfgContainer [2021-11-25 18:54:58,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:54:58,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:54:58,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:54:58,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:54:58,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:54:54" (1/3) ... [2021-11-25 18:54:58,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2805abd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:54:58, skipping insertion in model container [2021-11-25 18:54:58,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:57" (2/3) ... [2021-11-25 18:54:58,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2805abd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:54:58, skipping insertion in model container [2021-11-25 18:54:58,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:54:58" (3/3) ... [2021-11-25 18:54:58,389 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_back_harness.i [2021-11-25 18:54:58,397 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:54:58,398 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:54:58,443 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:54:58,449 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:54:58,450 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:54:58,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 52 states have internal predecessors, (63), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-25 18:54:58,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 18:54:58,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:58,474 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 3, 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, 1, 1, 1, 1] [2021-11-25 18:54:58,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:58,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:58,478 INFO L85 PathProgramCache]: Analyzing trace with hash -53848961, now seen corresponding path program 1 times [2021-11-25 18:54:58,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:54:58,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019866783] [2021-11-25 18:54:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:58,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:54:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-25 18:54:59,056 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:54:59,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019866783] [2021-11-25 18:54:59,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019866783] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:54:59,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768171756] [2021-11-25 18:54:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:59,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:54:59,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:54:59,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:54:59,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:54:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:59,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 94 conjunts are in the unsatisfiable core [2021-11-25 18:54:59,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:59,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 18:54:59,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 18:54:59,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2021-11-25 18:54:59,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:54:59,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2021-11-25 18:55:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-25 18:55:02,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:55:02,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768171756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:55:02,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:55:02,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2021-11-25 18:55:02,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594060054] [2021-11-25 18:55:02,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:55:02,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:55:02,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:55:02,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:55:02,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:55:02,526 INFO L87 Difference]: Start difference. First operand has 99 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 52 states have internal predecessors, (63), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-25 18:55:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:55:02,969 INFO L93 Difference]: Finished difference Result 232 states and 346 transitions. [2021-11-25 18:55:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:55:02,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 70 [2021-11-25 18:55:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:55:02,981 INFO L225 Difference]: With dead ends: 232 [2021-11-25 18:55:02,981 INFO L226 Difference]: Without dead ends: 143 [2021-11-25 18:55:02,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:55:02,989 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 19 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:55:02,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 707 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 100 Unchecked, 0.3s Time] [2021-11-25 18:55:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-25 18:55:03,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2021-11-25 18:55:03,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 58 states have internal predecessors, (68), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-25 18:55:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 153 transitions. [2021-11-25 18:55:03,046 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 153 transitions. Word has length 70 [2021-11-25 18:55:03,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:55:03,047 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 153 transitions. [2021-11-25 18:55:03,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-25 18:55:03,048 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 153 transitions. [2021-11-25 18:55:03,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 18:55:03,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:03,052 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 3, 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, 1, 1, 1, 1, 1] [2021-11-25 18:55:03,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:55:03,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 18:55:03,267 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:03,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1869393802, now seen corresponding path program 1 times [2021-11-25 18:55:03,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:55:03,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722740463] [2021-11-25 18:55:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:03,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:55:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-25 18:55:03,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:55:03,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722740463] [2021-11-25 18:55:03,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722740463] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:55:03,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294606187] [2021-11-25 18:55:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:03,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:55:03,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:55:03,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:55:03,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473a23a5-4b1f-49e2-8709-a1b8bc5bcd86/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:55:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:03,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-25 18:55:03,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:03,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:55:03,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:03,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 18:55:03,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:03,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 18:55:04,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-25 18:55:04,053 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:55:04,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 18:55:04,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 10 [2021-11-25 18:55:04,108 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:55:04,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 18:55:04,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-25 18:55:04,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 30 [2021-11-25 18:55:04,254 INFO L354 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2021-11-25 18:55:04,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 126 treesize of output 109 [2021-11-25 18:55:04,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 101 [2021-11-25 18:55:04,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-25 18:55:04,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 44 [2021-11-25 18:55:04,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2021-11-25 18:55:04,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2021-11-25 18:55:04,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:55:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-25 18:55:09,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:55:17,435 INFO L354 Elim1Store]: treesize reduction 78, result has 27.1 percent of original size [2021-11-25 18:55:17,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 500 treesize of output 385 [2021-11-25 18:55:17,650 INFO L354 Elim1Store]: treesize reduction 78, result has 27.1 percent of original size [2021-11-25 18:55:17,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 385 treesize of output 269 [2021-11-25 18:55:17,692 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:55:17,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 897 treesize of output 863 [2021-11-25 18:55:17,747 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:55:17,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1363 treesize of output 1335 [2021-11-25 18:55:17,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1494 treesize of output 1490 [2021-11-25 18:55:17,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1478 treesize of output 1476 [2021-11-25 18:55:17,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1500 treesize of output 1492 [2021-11-25 18:55:17,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1468 treesize of output 1464 [2021-11-25 18:55:18,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1532 treesize of output 1516 [2021-11-25 18:55:18,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1516 treesize of output 1508 [2021-11-25 18:55:18,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1540 treesize of output 1532 [2021-11-25 18:55:18,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1532 treesize of output 1528 [2021-11-25 18:55:18,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1552 treesize of output 1544 [2021-11-25 18:55:18,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1514 treesize of output 1506 [2021-11-25 18:55:18,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1554 treesize of output 1538 [2021-11-25 18:55:18,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1486 treesize of output 1482 [2021-11-25 18:55:18,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1482 treesize of output 1478 [2021-11-25 18:55:18,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1478 treesize of output 1470 [2021-11-25 18:55:18,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1470 treesize of output 1466 [2021-11-25 18:55:18,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1518 treesize of output 1510 [2021-11-25 18:55:19,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 18:55:19,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-25 18:55:19,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 18:55:19,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:19,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:19,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:19,501 INFO L354 Elim1Store]: treesize reduction 82, result has 58.4 percent of original size [2021-11-25 18:55:19,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 144 treesize of output 234 [2021-11-25 18:55:19,865 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 18:55:19,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 38 [2021-11-25 18:55:22,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294606187] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:55:22,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1021269777] [2021-11-25 18:55:22,030 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-25 18:55:22,030 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:55:22,034 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:55:22,052 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:55:22,052 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:55:22,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,201 INFO L354 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2021-11-25 18:55:22,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 42 treesize of output 73 [2021-11-25 18:55:22,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2021-11-25 18:55:22,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2021-11-25 18:55:22,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 30 [2021-11-25 18:55:22,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2021-11-25 18:55:22,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 77 [2021-11-25 18:55:22,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:22,846 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 18:55:22,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2021-11-25 18:55:22,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:22,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:22,910 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 18:55:22,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 103 [2021-11-25 18:55:22,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:22,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,012 INFO L354 Elim1Store]: treesize reduction 50, result has 47.9 percent of original size [2021-11-25 18:55:23,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 18 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 74 [2021-11-25 18:55:23,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,132 INFO L354 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2021-11-25 18:55:23,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2021-11-25 18:55:23,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-25 18:55:23,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-11-25 18:55:23,206 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-25 18:55:23,209 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-25 18:55:23,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:23,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:23,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:23,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:23,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:23,527 INFO L354 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2021-11-25 18:55:23,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 337 treesize of output 365 [2021-11-25 18:55:23,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:23,608 INFO L354 Elim1Store]: treesize reduction 29, result has 37.0 percent of original size [2021-11-25 18:55:23,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 331 treesize of output 314 [2021-11-25 18:55:24,059 INFO L354 Elim1Store]: treesize reduction 108, result has 48.8 percent of original size [2021-11-25 18:55:24,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 305 treesize of output 395 [2021-11-25 18:55:24,410 INFO L354 Elim1Store]: treesize reduction 60, result has 61.3 percent of original size [2021-11-25 18:55:24,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 288 treesize of output 369 [2021-11-25 18:55:24,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:24,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:24,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:24,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:24,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:55:24,621 INFO L354 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2021-11-25 18:55:24,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 323 treesize of output 339 [2021-11-25 18:55:24,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 283 [2021-11-25 18:55:24,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:24,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2021-11-25 18:58:13,626 WARN L227 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 1779 DAG size of output: 1779 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:00:24,265 WARN L227 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 1833 DAG size of output: 1833 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)