./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/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_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:06:59,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:06:59,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:06:59,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:06:59,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:06:59,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:06:59,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:06:59,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:06:59,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:06:59,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:06:59,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:06:59,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:06:59,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:06:59,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:06:59,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:06:59,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:06:59,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:06:59,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:06:59,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:06:59,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:06:59,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:06:59,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:06:59,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:06:59,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:06:59,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:06:59,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:06:59,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:06:59,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:06:59,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:06:59,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:06:59,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:06:59,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:06:59,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:06:59,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:06:59,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:06:59,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:06:59,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:06:59,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:06:59,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:06:59,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:06:59,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:06:59,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 18:06:59,565 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:06:59,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:06:59,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:06:59,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:06:59,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:06:59,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:06:59,568 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:06:59,568 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:06:59,569 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:06:59,569 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:06:59,570 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:06:59,570 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:06:59,570 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:06:59,570 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:06:59,571 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:06:59,571 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:06:59,571 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:06:59,571 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:06:59,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:06:59,572 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:06:59,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:06:59,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:06:59,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:06:59,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:06:59,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:06:59,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:06:59,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:06:59,575 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 18:06:59,576 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:06:59,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:06:59,576 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:06:59,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:06:59,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:06:59,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:06:59,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:06:59,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:06:59,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:06:59,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:06:59,578 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:06:59,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:06:59,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:06:59,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:06:59,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:06:59,579 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_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2021-11-25 18:06:59,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:06:59,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:06:59,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:06:59,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:06:59,857 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:06:59,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2021-11-25 18:06:59,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/data/4399db7ef/b518a2ca501b4a849285f55ef570d1f0/FLAGc62062000 [2021-11-25 18:07:00,623 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:07:00,624 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2021-11-25 18:07:00,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/data/4399db7ef/b518a2ca501b4a849285f55ef570d1f0/FLAGc62062000 [2021-11-25 18:07:00,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/data/4399db7ef/b518a2ca501b4a849285f55ef570d1f0 [2021-11-25 18:07:00,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:07:00,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:07:00,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:07:00,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:07:00,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:07:00,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:07:00" (1/1) ... [2021-11-25 18:07:00,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f55620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:00, skipping insertion in model container [2021-11-25 18:07:00,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:07:00" (1/1) ... [2021-11-25 18:07:00,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:07:00,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:07:01,419 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_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2021-11-25 18:07:01,428 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_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2021-11-25 18:07:01,526 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_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2021-11-25 18:07:01,527 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_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2021-11-25 18:07:01,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:07:01,544 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:07:01,580 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_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2021-11-25 18:07:01,582 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_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2021-11-25 18:07:01,648 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_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2021-11-25 18:07:01,649 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_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2021-11-25 18:07:01,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:07:01,734 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:07:01,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01 WrapperNode [2021-11-25 18:07:01,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:07:01,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:07:01,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:07:01,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:07:01,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01" (1/1) ... [2021-11-25 18:07:01,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01" (1/1) ... [2021-11-25 18:07:01,937 INFO L137 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1050 [2021-11-25 18:07:01,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:07:01,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:07:01,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:07:01,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:07:01,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01" (1/1) ... [2021-11-25 18:07:01,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01" (1/1) ... [2021-11-25 18:07:01,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01" (1/1) ... [2021-11-25 18:07:01,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01" (1/1) ... [2021-11-25 18:07:02,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01" (1/1) ... [2021-11-25 18:07:02,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01" (1/1) ... [2021-11-25 18:07:02,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01" (1/1) ... [2021-11-25 18:07:02,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:07:02,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:07:02,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:07:02,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:07:02,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01" (1/1) ... [2021-11-25 18:07:02,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:07:02,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:02,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:07:02,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:07:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:07:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 18:07:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:07:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:07:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-25 18:07:02,173 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-25 18:07:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:07:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:07:02,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:07:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:07:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:07:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:07:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-25 18:07:02,175 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-25 18:07:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:07:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-25 18:07:02,175 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-25 18:07:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:07:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:07:02,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:07:02,421 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:07:02,423 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:07:03,392 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:07:03,806 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:07:03,806 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-25 18:07:03,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:07:03 BoogieIcfgContainer [2021-11-25 18:07:03,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:07:03,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:07:03,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:07:03,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:07:03,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:07:00" (1/3) ... [2021-11-25 18:07:03,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722808d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:07:03, skipping insertion in model container [2021-11-25 18:07:03,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:01" (2/3) ... [2021-11-25 18:07:03,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722808d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:07:03, skipping insertion in model container [2021-11-25 18:07:03,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:07:03" (3/3) ... [2021-11-25 18:07:03,823 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-1.i [2021-11-25 18:07:03,828 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:07:03,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-25 18:07:03,888 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:07:03,900 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 18:07:03,901 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-25 18:07:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-25 18:07:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:07:03,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:03,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:07:03,932 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-25 18:07:03,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 27392344, now seen corresponding path program 1 times [2021-11-25 18:07:03,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:03,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424647551] [2021-11-25 18:07:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:03,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:04,105 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:07:04,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75874281] [2021-11-25 18:07:04,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:04,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:04,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:04,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:07:04,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:07:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:04,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 18:07:04,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:04,459 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 18:07:04,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2021-11-25 18:07:04,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:07:04,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:07:04,708 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:07:04,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 18:07:04,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:07:04,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:04,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:07:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:04,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:07:04,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:04,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424647551] [2021-11-25 18:07:04,818 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:07:04,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75874281] [2021-11-25 18:07:04,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75874281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:04,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:04,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:07:04,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854313021] [2021-11-25 18:07:04,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:04,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:07:04,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:04,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:07:04,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:07:04,872 INFO L87 Difference]: Start difference. First operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:07,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:07,171 INFO L93 Difference]: Finished difference Result 376 states and 608 transitions. [2021-11-25 18:07:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:07:07,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 18:07:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:07,187 INFO L225 Difference]: With dead ends: 376 [2021-11-25 18:07:07,188 INFO L226 Difference]: Without dead ends: 206 [2021-11-25 18:07:07,192 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:07:07,195 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 64 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:07,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 420 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:07:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-25 18:07:07,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 153. [2021-11-25 18:07:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 125 states have (on average 1.256) internal successors, (157), 139 states have internal predecessors, (157), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 18:07:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2021-11-25 18:07:07,253 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 4 [2021-11-25 18:07:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:07,253 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2021-11-25 18:07:07,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2021-11-25 18:07:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 18:07:07,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:07,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:07,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:07:07,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 18:07:07,480 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-25 18:07:07,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:07,481 INFO L85 PathProgramCache]: Analyzing trace with hash -646465482, now seen corresponding path program 1 times [2021-11-25 18:07:07,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:07,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238913570] [2021-11-25 18:07:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:07,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:07,525 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:07:07,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906041234] [2021-11-25 18:07:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:07,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:07,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:07,539 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:07:07,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:07:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:07,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:07:07,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:07,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:07:07,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:07,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238913570] [2021-11-25 18:07:07,829 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:07:07,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906041234] [2021-11-25 18:07:07,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906041234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:07,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:07,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:07:07,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419449272] [2021-11-25 18:07:07,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:07,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:07:07,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:07,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:07:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:07:07,834 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-25 18:07:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:09,554 INFO L93 Difference]: Finished difference Result 261 states and 302 transitions. [2021-11-25 18:07:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:07:09,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 18 [2021-11-25 18:07:09,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:09,561 INFO L225 Difference]: With dead ends: 261 [2021-11-25 18:07:09,561 INFO L226 Difference]: Without dead ends: 259 [2021-11-25 18:07:09,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:07:09,563 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 106 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:09,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 443 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-25 18:07:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-25 18:07:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 249. [2021-11-25 18:07:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 216 states have (on average 1.25) internal successors, (270), 231 states have internal predecessors, (270), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-25 18:07:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2021-11-25 18:07:09,588 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 18 [2021-11-25 18:07:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:09,588 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2021-11-25 18:07:09,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-25 18:07:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2021-11-25 18:07:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:07:09,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:09,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:09,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:07:09,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:09,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-25 18:07:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1434406572, now seen corresponding path program 1 times [2021-11-25 18:07:09,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:09,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129039072] [2021-11-25 18:07:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:09,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:09,836 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:07:09,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055659527] [2021-11-25 18:07:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:09,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:09,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:09,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:07:09,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:07:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:10,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:07:10,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:10,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:07:10,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:10,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129039072] [2021-11-25 18:07:10,110 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:07:10,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055659527] [2021-11-25 18:07:10,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055659527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:10,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:10,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:07:10,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875492987] [2021-11-25 18:07:10,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:10,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:07:10,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:10,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:07:10,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:07:10,113 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-25 18:07:12,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:12,500 INFO L93 Difference]: Finished difference Result 441 states and 532 transitions. [2021-11-25 18:07:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:07:12,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 19 [2021-11-25 18:07:12,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:12,511 INFO L225 Difference]: With dead ends: 441 [2021-11-25 18:07:12,511 INFO L226 Difference]: Without dead ends: 439 [2021-11-25 18:07:12,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:07:12,513 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 147 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:12,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 451 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:07:12,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-25 18:07:12,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 428. [2021-11-25 18:07:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 384 states have (on average 1.25) internal successors, (480), 400 states have internal predecessors, (480), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-11-25 18:07:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 529 transitions. [2021-11-25 18:07:12,550 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 529 transitions. Word has length 19 [2021-11-25 18:07:12,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:12,551 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 529 transitions. [2021-11-25 18:07:12,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-25 18:07:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 529 transitions. [2021-11-25 18:07:12,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 18:07:12,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:12,553 INFO L514 BasicCegarLoop]: trace histogram [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 18:07:12,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:07:12,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:12,780 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-25 18:07:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1558573003, now seen corresponding path program 1 times [2021-11-25 18:07:12,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:12,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237768569] [2021-11-25 18:07:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:12,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:12,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:12,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237768569] [2021-11-25 18:07:12,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237768569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:12,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:12,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:07:12,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849082849] [2021-11-25 18:07:12,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:12,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:07:12,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:12,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:07:12,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:07:12,919 INFO L87 Difference]: Start difference. First operand 428 states and 529 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:15,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:15,082 INFO L93 Difference]: Finished difference Result 682 states and 842 transitions. [2021-11-25 18:07:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:07:15,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-25 18:07:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:15,090 INFO L225 Difference]: With dead ends: 682 [2021-11-25 18:07:15,090 INFO L226 Difference]: Without dead ends: 562 [2021-11-25 18:07:15,091 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:07:15,092 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 56 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:15,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 412 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 18:07:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-25 18:07:15,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 428. [2021-11-25 18:07:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 384 states have (on average 1.2473958333333333) internal successors, (479), 400 states have internal predecessors, (479), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-11-25 18:07:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 528 transitions. [2021-11-25 18:07:15,125 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 528 transitions. Word has length 24 [2021-11-25 18:07:15,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:15,125 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 528 transitions. [2021-11-25 18:07:15,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:15,125 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 528 transitions. [2021-11-25 18:07:15,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 18:07:15,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:15,127 INFO L514 BasicCegarLoop]: trace histogram [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 18:07:15,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:07:15,127 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-25 18:07:15,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:15,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2115465486, now seen corresponding path program 1 times [2021-11-25 18:07:15,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:15,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129291515] [2021-11-25 18:07:15,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:15,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:15,156 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:07:15,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052249790] [2021-11-25 18:07:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:15,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:15,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:15,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:07:15,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:07:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:15,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:07:15,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:15,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:07:15,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:15,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129291515] [2021-11-25 18:07:15,500 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:07:15,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052249790] [2021-11-25 18:07:15,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052249790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:15,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:15,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:07:15,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215575813] [2021-11-25 18:07:15,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:15,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:07:15,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:15,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:07:15,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:07:15,502 INFO L87 Difference]: Start difference. First operand 428 states and 528 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:07:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:16,856 INFO L93 Difference]: Finished difference Result 454 states and 548 transitions. [2021-11-25 18:07:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:07:16,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-25 18:07:16,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:16,864 INFO L225 Difference]: With dead ends: 454 [2021-11-25 18:07:16,864 INFO L226 Difference]: Without dead ends: 453 [2021-11-25 18:07:16,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:07:16,866 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 112 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:16,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 304 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:07:16,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-25 18:07:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 443. [2021-11-25 18:07:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 394 states have (on average 1.2436548223350254) internal successors, (490), 411 states have internal predecessors, (490), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-11-25 18:07:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 545 transitions. [2021-11-25 18:07:16,895 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 545 transitions. Word has length 27 [2021-11-25 18:07:16,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:16,896 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 545 transitions. [2021-11-25 18:07:16,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:07:16,896 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 545 transitions. [2021-11-25 18:07:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 18:07:16,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:16,898 INFO L514 BasicCegarLoop]: trace histogram [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 18:07:16,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:07:17,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:17,112 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-25 18:07:17,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1154920565, now seen corresponding path program 1 times [2021-11-25 18:07:17,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:17,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878693778] [2021-11-25 18:07:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:17,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:17,162 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:07:17,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528883082] [2021-11-25 18:07:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:17,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:17,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:17,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:07:17,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:07:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:17,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:07:17,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:17,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:07:17,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:17,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878693778] [2021-11-25 18:07:17,527 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:07:17,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528883082] [2021-11-25 18:07:17,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528883082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:17,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:17,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:07:17,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790775278] [2021-11-25 18:07:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:17,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:07:17,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:17,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:07:17,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:07:17,531 INFO L87 Difference]: Start difference. First operand 443 states and 545 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:07:18,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:18,184 INFO L93 Difference]: Finished difference Result 443 states and 545 transitions. [2021-11-25 18:07:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:07:18,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-11-25 18:07:18,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:18,193 INFO L225 Difference]: With dead ends: 443 [2021-11-25 18:07:18,193 INFO L226 Difference]: Without dead ends: 442 [2021-11-25 18:07:18,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:07:18,194 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:18,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 147 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:07:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-25 18:07:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-11-25 18:07:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 394 states have (on average 1.2385786802030456) internal successors, (488), 410 states have internal predecessors, (488), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-11-25 18:07:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 543 transitions. [2021-11-25 18:07:18,220 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 543 transitions. Word has length 28 [2021-11-25 18:07:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:18,221 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 543 transitions. [2021-11-25 18:07:18,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 18:07:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 543 transitions. [2021-11-25 18:07:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 18:07:18,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:18,223 INFO L514 BasicCegarLoop]: trace histogram [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 18:07:18,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:07:18,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:18,437 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-25 18:07:18,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:18,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1356353724, now seen corresponding path program 1 times [2021-11-25 18:07:18,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:18,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674809252] [2021-11-25 18:07:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:18,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:18,535 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:07:18,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716396944] [2021-11-25 18:07:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:18,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:18,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:18,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:07:18,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:07:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:19,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:07:19,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:19,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:07:19,239 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:19,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674809252] [2021-11-25 18:07:19,239 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:07:19,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716396944] [2021-11-25 18:07:19,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716396944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:19,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:19,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:07:19,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597314493] [2021-11-25 18:07:19,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:19,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:07:19,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:07:19,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:07:19,242 INFO L87 Difference]: Start difference. First operand 442 states and 543 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:20,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:20,888 INFO L93 Difference]: Finished difference Result 814 states and 992 transitions. [2021-11-25 18:07:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:07:20,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-25 18:07:20,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:20,896 INFO L225 Difference]: With dead ends: 814 [2021-11-25 18:07:20,896 INFO L226 Difference]: Without dead ends: 377 [2021-11-25 18:07:20,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:07:20,899 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 49 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:20,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 284 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:07:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-25 18:07:20,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2021-11-25 18:07:20,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 326 states have (on average 1.2147239263803682) internal successors, (396), 341 states have internal predecessors, (396), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2021-11-25 18:07:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 441 transitions. [2021-11-25 18:07:20,919 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 441 transitions. Word has length 28 [2021-11-25 18:07:20,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:20,920 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 441 transitions. [2021-11-25 18:07:20,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:20,920 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 441 transitions. [2021-11-25 18:07:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 18:07:20,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:20,921 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 18:07:20,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:07:21,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 18:07:21,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-25 18:07:21,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash 227049609, now seen corresponding path program 1 times [2021-11-25 18:07:21,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:21,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940046090] [2021-11-25 18:07:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:21,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:21,188 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:07:21,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648022501] [2021-11-25 18:07:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:21,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:21,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:21,224 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:07:21,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:07:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:21,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 18:07:21,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:21,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:07:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:21,932 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:21,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940046090] [2021-11-25 18:07:21,933 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:07:21,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648022501] [2021-11-25 18:07:21,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648022501] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:07:21,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [218085711] [2021-11-25 18:07:21,954 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 18:07:21,954 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:07:21,958 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:07:21,964 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:07:21,964 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:07:22,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,052 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:07:22,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-25 18:07:22,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-11-25 18:07:22,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:07:22,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-11-25 18:07:22,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-25 18:07:22,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-11-25 18:07:22,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,195 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 18:07:22,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2021-11-25 18:07:22,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2021-11-25 18:07:22,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-11-25 18:07:22,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-25 18:07:22,262 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:07:22,273 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:07:22,357 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:07:22,367 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:07:22,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 78 [2021-11-25 18:07:22,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2021-11-25 18:07:22,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-25 18:07:22,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 96 [2021-11-25 18:07:22,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 48 treesize of output 46 [2021-11-25 18:07:22,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 92 [2021-11-25 18:07:22,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,955 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 44 treesize of output 58 [2021-11-25 18:07:22,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:22,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-25 18:07:23,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 105 [2021-11-25 18:07:23,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 103 [2021-11-25 18:07:23,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 53 [2021-11-25 18:07:23,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 61 [2021-11-25 18:07:23,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,157 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 28 treesize of output 31 [2021-11-25 18:07:23,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,178 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 28 treesize of output 31 [2021-11-25 18:07:23,291 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:07:23,295 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-25 18:07:23,300 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-25 18:07:23,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:07:23,316 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 18:07:23,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 74 [2021-11-25 18:07:23,433 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 46 treesize of output 30 [2021-11-25 18:07:23,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 53 treesize of output 27 [2021-11-25 18:07:23,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:07:23,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-25 18:07:23,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:07:23,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 26 treesize of output 16 [2021-11-25 18:07:23,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 26 treesize of output 16 [2021-11-25 18:07:23,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-25 18:07:23,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:07:23,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:07:23,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 74 [2021-11-25 18:07:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:23,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 35 treesize of output 21 [2021-11-25 18:07:23,778 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 26 treesize of output 16 [2021-11-25 18:07:23,850 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:07:23,861 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:07:23,868 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:07:24,082 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 56 for LOIs [2021-11-25 18:07:24,184 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 129 for LOIs [2021-11-25 18:07:24,519 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:07:28,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [218085711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:28,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:07:28,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [6, 7] total 32 [2021-11-25 18:07:28,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881403371] [2021-11-25 18:07:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:28,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 18:07:28,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 18:07:28,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:07:28,898 INFO L87 Difference]: Start difference. First operand 368 states and 441 transitions. Second operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:07:35,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:37,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:37,761 INFO L93 Difference]: Finished difference Result 725 states and 872 transitions. [2021-11-25 18:07:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:07:37,762 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-11-25 18:07:37,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:37,765 INFO L225 Difference]: With dead ends: 725 [2021-11-25 18:07:37,765 INFO L226 Difference]: Without dead ends: 365 [2021-11-25 18:07:37,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:07:37,768 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 9 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 438 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:37,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1372 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 648 Invalid, 1 Unknown, 438 Unchecked, 8.8s Time] [2021-11-25 18:07:37,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-25 18:07:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2021-11-25 18:07:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 323 states have (on average 1.2105263157894737) internal successors, (391), 337 states have internal predecessors, (391), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2021-11-25 18:07:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 436 transitions. [2021-11-25 18:07:37,790 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 436 transitions. Word has length 34 [2021-11-25 18:07:37,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:37,791 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 436 transitions. [2021-11-25 18:07:37,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 18:07:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 436 transitions. [2021-11-25 18:07:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 18:07:37,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:37,792 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 18:07:37,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:07:38,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:38,016 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-25 18:07:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:38,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1472683514, now seen corresponding path program 1 times [2021-11-25 18:07:38,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:38,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851390758] [2021-11-25 18:07:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:38,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:38,048 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:07:38,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548070024] [2021-11-25 18:07:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:38,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:38,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:38,050 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:07:38,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 18:07:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:38,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:07:38,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:38,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:07:38,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:38,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851390758] [2021-11-25 18:07:38,531 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:07:38,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548070024] [2021-11-25 18:07:38,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548070024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:38,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:38,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:07:38,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404851735] [2021-11-25 18:07:38,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:38,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:07:38,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:07:38,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:07:38,537 INFO L87 Difference]: Start difference. First operand 365 states and 436 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:07:40,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:42,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:43,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:43,713 INFO L93 Difference]: Finished difference Result 664 states and 802 transitions. [2021-11-25 18:07:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:07:43,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-11-25 18:07:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:43,719 INFO L225 Difference]: With dead ends: 664 [2021-11-25 18:07:43,719 INFO L226 Difference]: Without dead ends: 662 [2021-11-25 18:07:43,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:07:43,720 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 151 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:43,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 678 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-25 18:07:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-11-25 18:07:43,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 650. [2021-11-25 18:07:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 593 states have (on average 1.2107925801011805) internal successors, (718), 607 states have internal predecessors, (718), 33 states have call successors, (33), 15 states have call predecessors, (33), 11 states have return successors, (44), 27 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-25 18:07:43,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 795 transitions. [2021-11-25 18:07:43,758 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 795 transitions. Word has length 37 [2021-11-25 18:07:43,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:43,759 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 795 transitions. [2021-11-25 18:07:43,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:07:43,759 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 795 transitions. [2021-11-25 18:07:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-25 18:07:43,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:43,761 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:43,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:07:43,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:43,976 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-25 18:07:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:43,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1507787838, now seen corresponding path program 1 times [2021-11-25 18:07:43,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:43,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496051330] [2021-11-25 18:07:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:43,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:44,025 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:07:44,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678700234] [2021-11-25 18:07:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:44,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:44,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:44,027 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:07:44,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 18:07:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:44,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:07:44,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:44,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:07:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:07:44,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:44,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496051330] [2021-11-25 18:07:44,768 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:07:44,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678700234] [2021-11-25 18:07:44,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678700234] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:07:44,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [300526686] [2021-11-25 18:07:44,774 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-25 18:07:44,775 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:07:44,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:07:44,775 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:07:44,775 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:07:44,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:44,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:07:44,834 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-25 18:07:44,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 70 [2021-11-25 18:07:44,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:07:44,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:44,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 [2021-11-25 18:07:44,867 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 5 treesize of output 3 [2021-11-25 18:07:44,880 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:07:44,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:44,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 37 treesize of output 27 [2021-11-25 18:07:44,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:44,944 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:07:44,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-25 18:07:44,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-11-25 18:07:44,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-11-25 18:07:44,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:44,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-25 18:07:45,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,080 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 18:07:45,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2021-11-25 18:07:45,098 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:07:45,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2021-11-25 18:07:45,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-11-25 18:07:45,151 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:07:45,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-25 18:07:45,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 114 [2021-11-25 18:07:45,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2021-11-25 18:07:45,279 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:07:45,294 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:07:45,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-25 18:07:45,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-25 18:07:45,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2021-11-25 18:07:45,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 48 treesize of output 46 [2021-11-25 18:07:45,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 128 [2021-11-25 18:07:45,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,879 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 44 treesize of output 58 [2021-11-25 18:07:45,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 141 [2021-11-25 18:07:45,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 139 [2021-11-25 18:07:45,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:45,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 53 [2021-11-25 18:07:46,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 61 [2021-11-25 18:07:46,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,090 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 28 treesize of output 31 [2021-11-25 18:07:46,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,114 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 28 treesize of output 31 [2021-11-25 18:07:46,304 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:07:46,308 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-25 18:07:46,312 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-25 18:07:46,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:07:46,346 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 18:07:46,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 110 [2021-11-25 18:07:46,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 50 treesize of output 42 [2021-11-25 18:07:46,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 35 treesize of output 21 [2021-11-25 18:07:46,482 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 26 treesize of output 16 [2021-11-25 18:07:46,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:07:46,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:07:46,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-25 18:07:46,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 26 treesize of output 16 [2021-11-25 18:07:46,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:07:46,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:07:46,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 110 [2021-11-25 18:07:46,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 50 treesize of output 42 [2021-11-25 18:07:46,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 35 treesize of output 21 [2021-11-25 18:07:46,915 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 26 treesize of output 16 [2021-11-25 18:07:46,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 26 treesize of output 16 [2021-11-25 18:07:46,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:46,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-25 18:07:47,056 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:07:47,078 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:07:47,101 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:07:48,361 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 80 for LOIs [2021-11-25 18:07:48,463 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 138 for LOIs [2021-11-25 18:07:49,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2021-11-25 18:07:49,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2021-11-25 18:07:49,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:49,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:49,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 122 [2021-11-25 18:07:49,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2021-11-25 18:07:49,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:49,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:49,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 122 [2021-11-25 18:07:49,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2021-11-25 18:07:50,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:50,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:07:50,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 127 [2021-11-25 18:07:50,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2021-11-25 18:07:50,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2021-11-25 18:07:50,406 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 130 for LOIs [2021-11-25 18:07:50,532 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:07:56,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [300526686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:56,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:07:56,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 5] total 31 [2021-11-25 18:07:56,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138530942] [2021-11-25 18:07:56,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:56,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 18:07:56,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:56,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 18:07:56,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:07:56,502 INFO L87 Difference]: Start difference. First operand 650 states and 795 transitions. Second operand has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 18:08:01,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:08:03,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:08:06,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:06,254 INFO L93 Difference]: Finished difference Result 1272 states and 1563 transitions. [2021-11-25 18:08:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:08:06,255 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 46 [2021-11-25 18:08:06,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:06,260 INFO L225 Difference]: With dead ends: 1272 [2021-11-25 18:08:06,261 INFO L226 Difference]: Without dead ends: 652 [2021-11-25 18:08:06,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:08:06,264 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 9 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 645 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:06,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1533 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 701 Invalid, 0 Unknown, 645 Unchecked, 9.7s Time] [2021-11-25 18:08:06,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-25 18:08:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2021-11-25 18:08:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 595 states have (on average 1.2100840336134453) internal successors, (720), 609 states have internal predecessors, (720), 33 states have call successors, (33), 15 states have call predecessors, (33), 11 states have return successors, (44), 27 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-25 18:08:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 797 transitions. [2021-11-25 18:08:06,307 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 797 transitions. Word has length 46 [2021-11-25 18:08:06,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:06,307 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 797 transitions. [2021-11-25 18:08:06,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 18:08:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 797 transitions. [2021-11-25 18:08:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 18:08:06,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:06,309 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:06,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:08:06,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:08:06,536 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-25 18:08:06,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:06,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2074882063, now seen corresponding path program 1 times [2021-11-25 18:08:06,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:06,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851154677] [2021-11-25 18:08:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:06,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:06,583 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:08:06,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602924792] [2021-11-25 18:08:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:06,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:08:06,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:08:06,585 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:08:06,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dc93d2-b0fe-4aeb-9d2d-ca9ddb2266db/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:08:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:07,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:08:07,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:08:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:08:07,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:08:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 18:08:07,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:07,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851154677] [2021-11-25 18:08:07,274 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:08:07,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602924792] [2021-11-25 18:08:07,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602924792] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:08:07,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1001069867] [2021-11-25 18:08:07,278 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-25 18:08:07,278 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:08:07,279 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:08:07,279 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:08:07,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:08:07,305 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 15 treesize of output 1 [2021-11-25 18:08:07,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:07,345 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:08:07,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-25 18:08:07,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:07,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:07,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-11-25 18:08:07,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:08:07,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:07,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-25 18:08:07,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-11-25 18:08:07,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:07,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:07,473 INFO L354 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2021-11-25 18:08:07,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 43 treesize of output 65 [2021-11-25 18:08:07,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-11-25 18:08:07,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:07,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:07,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 23 treesize of output 25 [2021-11-25 18:08:07,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:07,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:07,601 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-25 18:08:07,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 46 [2021-11-25 18:08:07,616 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:08:07,630 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:08:07,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:07,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:07,698 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 18:08:07,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2021-11-25 18:08:07,764 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 18:08:07,787 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:08:07,800 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:08:08,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-25 18:08:08,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-25 18:08:08,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,284 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 79 treesize of output 49 [2021-11-25 18:08:08,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,296 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 62 treesize of output 64 [2021-11-25 18:08:08,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,345 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 28 treesize of output 31 [2021-11-25 18:08:08,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,361 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 28 treesize of output 31 [2021-11-25 18:08:08,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 73 [2021-11-25 18:08:08,521 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:08:08,524 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-25 18:08:08,528 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-25 18:08:08,549 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 18:08:08,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:08:08,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:08:08,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:08:08,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 73 treesize of output 37 [2021-11-25 18:08:08,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:08:08,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-25 18:08:08,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 73 treesize of output 37 [2021-11-25 18:08:08,861 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:08:08,874 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 13 treesize of output 9 [2021-11-25 18:08:08,890 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:08:08,953 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:08:08,959 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:08:08,965 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:08:08,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:08,993 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 0 case distinctions, treesize of input 107 treesize of output 106 [2021-11-25 18:08:09,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:09,002 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 0 case distinctions, treesize of input 107 treesize of output 106 [2021-11-25 18:08:09,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:09,012 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 0 case distinctions, treesize of input 109 treesize of output 108 [2021-11-25 18:08:09,037 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:08:09,043 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:08:09,049 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:08:09,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 18:08:09,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-11-25 18:08:09,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 18:08:09,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-11-25 18:08:10,987 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-25 18:08:10,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1330 treesize of output 951 [2021-11-25 18:08:11,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:13,024 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-25 18:08:13,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 1387 treesize of output 1153 [2021-11-25 18:08:13,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:15,061 INFO L354 Elim1Store]: treesize reduction 1060, result has 37.8 percent of original size [2021-11-25 18:08:15,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 726 treesize of output 805 [2021-11-25 18:08:15,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:15,373 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-25 18:08:15,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 30 [2021-11-25 18:08:15,409 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:15,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:15,558 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:08:15,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 63 [2021-11-25 18:08:15,609 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:15,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:15,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2021-11-25 18:08:15,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:15,792 INFO L354 Elim1Store]: treesize reduction 11, result has 56.0 percent of original size [2021-11-25 18:08:15,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 44 [2021-11-25 18:08:15,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:15,921 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-11-25 18:08:15,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 26 [2021-11-25 18:08:15,956 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:16,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:16,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:16,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:08:16,050 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:16,087 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:16,143 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:16,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:16,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2021-11-25 18:08:16,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:19,640 INFO L354 Elim1Store]: treesize reduction 1396, result has 19.4 percent of original size [2021-11-25 18:08:19,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 4880 treesize of output 3839 [2021-11-25 18:08:19,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:21,470 INFO L354 Elim1Store]: treesize reduction 1100, result has 26.4 percent of original size [2021-11-25 18:08:21,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 11 new quantified variables, introduced 25 case distinctions, treesize of input 4924 treesize of output 3565 [2021-11-25 18:08:40,042 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:40,067 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:40,263 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:40,445 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:40,511 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:40,605 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:40,694 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:40,877 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:40,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:41,011 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:41,044 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:41,064 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:41,108 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:41,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:41,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:41,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:41,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:41,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 169 treesize of output 147 [2021-11-25 18:08:41,372 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:41,500 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:41,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:41,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:41,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:41,584 INFO L354 Elim1Store]: treesize reduction 172, result has 0.6 percent of original size [2021-11-25 18:08:41,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 913 treesize of output 863 [2021-11-25 18:08:41,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:41,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:41,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:41,913 INFO L354 Elim1Store]: treesize reduction 116, result has 43.4 percent of original size [2021-11-25 18:08:41,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 446 treesize of output 486 [2021-11-25 18:08:43,076 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:43,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:43,804 WARN L220 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:43,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:43,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:43,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:43,899 INFO L354 Elim1Store]: treesize reduction 216, result has 0.5 percent of original size [2021-11-25 18:08:43,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 case distinctions, treesize of input 3730 treesize of output 3652 [2021-11-25 18:08:45,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:45,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:45,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:45,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:45,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:45,639 INFO L354 Elim1Store]: treesize reduction 140, result has 28.2 percent of original size [2021-11-25 18:08:45,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 396 treesize of output 394 [2021-11-25 18:08:45,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:45,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:45,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:45,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:45,927 INFO L354 Elim1Store]: treesize reduction 94, result has 51.8 percent of original size [2021-11-25 18:08:45,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 474 treesize of output 514 [2021-11-25 18:08:46,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:46,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:46,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:46,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:46,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:46,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:46,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:46,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:46,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:46,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:46,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:46,344 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:08:46,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 1344 treesize of output 1296 [2021-11-25 18:08:47,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:47,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:47,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:47,432 INFO L354 Elim1Store]: treesize reduction 184, result has 45.4 percent of original size [2021-11-25 18:08:47,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 24 case distinctions, treesize of input 3739 treesize of output 3807 [2021-11-25 18:09:42,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:42,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:43,536 INFO L354 Elim1Store]: treesize reduction 113, result has 64.8 percent of original size [2021-11-25 18:09:43,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 455 treesize of output 608 [2021-11-25 18:10:35,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:35,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:35,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:36,050 INFO L354 Elim1Store]: treesize reduction 27, result has 58.5 percent of original size [2021-11-25 18:10:36,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 178 treesize of output 187 [2021-11-25 18:10:36,591 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:10:36,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:36,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:36,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:36,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:36,962 INFO L354 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2021-11-25 18:10:36,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 172 treesize of output 166 [2021-11-25 18:10:37,091 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:10:37,152 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:10:37,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:37,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:37,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:37,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:37,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:37,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:37,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:37,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:10:37,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:37,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:37,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:37,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:37,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:37,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:37,569 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 18:10:37,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 1 [2021-11-25 18:10:38,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:38,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:38,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:38,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 169 treesize of output 147 [2021-11-25 18:10:38,697 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:10:38,818 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:10:39,254 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:10:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:39,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:39,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:39,490 INFO L354 Elim1Store]: treesize reduction 278, result has 0.4 percent of original size [2021-11-25 18:10:39,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 922 treesize of output 866 [2021-11-25 18:10:39,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:39,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:39,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:39,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:39,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:39,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:39,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:39,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:39,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:39,933 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-11-25 18:10:39,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 1600 treesize of output 1542 [2021-11-25 18:10:41,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:41,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:41,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:41,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:41,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:41,352 INFO L354 Elim1Store]: treesize reduction 194, result has 0.5 percent of original size [2021-11-25 18:10:41,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 734 treesize of output 670 [2021-11-25 18:10:57,884 WARN L220 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:48,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:48,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 619 treesize of output 599 [2021-11-25 18:11:49,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:49,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:49,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:49,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 163 treesize of output 147 [2021-11-25 18:11:49,163 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:49,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:49,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:49,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:49,844 INFO L354 Elim1Store]: treesize reduction 172, result has 0.6 percent of original size [2021-11-25 18:11:49,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 913 treesize of output 863 [2021-11-25 18:11:50,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:50,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:50,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:50,125 INFO L354 Elim1Store]: treesize reduction 176, result has 0.6 percent of original size [2021-11-25 18:11:50,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 446 treesize of output 398 [2021-11-25 18:11:50,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:50,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:50,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:50,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:50,686 INFO L354 Elim1Store]: treesize reduction 216, result has 0.5 percent of original size [2021-11-25 18:11:50,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 case distinctions, treesize of input 3730 treesize of output 3652 [2021-11-25 18:12:44,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:44,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:44,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:44,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:44,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:44,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:45,949 INFO L354 Elim1Store]: treesize reduction 616, result has 41.7 percent of original size [2021-11-25 18:12:45,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 6 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 83 case distinctions, treesize of input 226889 treesize of output 218677 [2021-11-25 18:20:01,648 WARN L227 SmtUtils]: Spent 8.50s on a formula simplification that was a NOOP. DAG size: 3464 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)