./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/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 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:21:59,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:21:59,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:21:59,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:21:59,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:21:59,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:21:59,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:21:59,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:21:59,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:21:59,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:21:59,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:21:59,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:21:59,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:21:59,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:21:59,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:21:59,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:21:59,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:21:59,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:21:59,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:21:59,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:21:59,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:21:59,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:21:59,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:21:59,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:21:59,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:21:59,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:21:59,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:21:59,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:21:59,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:21:59,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:21:59,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:21:59,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:21:59,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:21:59,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:21:59,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:21:59,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:21:59,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:21:59,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:21:59,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:21:59,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:21:59,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:21:59,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 18:21:59,545 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:21:59,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:21:59,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:21:59,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:21:59,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:21:59,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:21:59,548 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:21:59,548 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:21:59,548 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:21:59,548 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:21:59,549 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:21:59,549 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:21:59,549 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:21:59,549 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:21:59,550 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:21:59,550 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:21:59,550 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:21:59,554 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:21:59,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:21:59,555 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:21:59,555 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:21:59,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:21:59,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:21:59,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:21:59,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:21:59,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:21:59,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:21:59,557 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 18:21:59,557 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:21:59,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:21:59,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:21:59,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:21:59,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:21:59,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:21:59,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:21:59,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:21:59,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:21:59,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:21:59,559 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:21:59,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:21:59,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:21:59,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:21:59,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:21:59,560 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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 [2021-11-25 18:21:59,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:21:59,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:21:59,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:21:59,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:21:59,816 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:21:59,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2021-11-25 18:21:59,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/data/0ffe3131b/f51422ccec6c41da86862764de08c861/FLAGebc6170ed [2021-11-25 18:22:00,544 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:22:00,545 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2021-11-25 18:22:00,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/data/0ffe3131b/f51422ccec6c41da86862764de08c861/FLAGebc6170ed [2021-11-25 18:22:00,730 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/data/0ffe3131b/f51422ccec6c41da86862764de08c861 [2021-11-25 18:22:00,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:22:00,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:22:00,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:22:00,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:22:00,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:22:00,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:00" (1/1) ... [2021-11-25 18:22:00,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20903d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:00, skipping insertion in model container [2021-11-25 18:22:00,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:00" (1/1) ... [2021-11-25 18:22:00,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:22:00,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:22:01,502 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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2021-11-25 18:22:01,526 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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2021-11-25 18:22:01,655 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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2021-11-25 18:22:01,656 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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2021-11-25 18:22:01,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:22:01,709 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:22:01,761 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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2021-11-25 18:22:01,779 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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2021-11-25 18:22:01,860 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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2021-11-25 18:22:01,861 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_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2021-11-25 18:22:01,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:22:01,933 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:22:01,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01 WrapperNode [2021-11-25 18:22:01,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:22:01,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:22:01,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:22:01,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:22:01,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01" (1/1) ... [2021-11-25 18:22:01,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01" (1/1) ... [2021-11-25 18:22:02,114 INFO L137 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1209 [2021-11-25 18:22:02,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:22:02,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:22:02,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:22:02,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:22:02,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01" (1/1) ... [2021-11-25 18:22:02,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01" (1/1) ... [2021-11-25 18:22:02,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01" (1/1) ... [2021-11-25 18:22:02,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01" (1/1) ... [2021-11-25 18:22:02,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01" (1/1) ... [2021-11-25 18:22:02,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01" (1/1) ... [2021-11-25 18:22:02,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01" (1/1) ... [2021-11-25 18:22:02,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:22:02,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:22:02,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:22:02,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:22:02,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01" (1/1) ... [2021-11-25 18:22:02,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:22:02,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:02,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:22:02,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:22:02,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:22:02,317 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 18:22:02,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:22:02,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:22:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-25 18:22:02,318 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-25 18:22:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:22:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:22:02,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:22:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:22:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:22:02,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:22:02,319 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-25 18:22:02,319 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-25 18:22:02,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:22:02,319 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-25 18:22:02,319 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-25 18:22:02,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:22:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:22:02,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:22:02,532 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:22:02,534 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:22:03,643 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:22:04,064 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:22:04,064 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-25 18:22:04,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:04 BoogieIcfgContainer [2021-11-25 18:22:04,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:22:04,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:22:04,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:22:04,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:22:04,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:22:00" (1/3) ... [2021-11-25 18:22:04,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430bade1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:04, skipping insertion in model container [2021-11-25 18:22:04,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:01" (2/3) ... [2021-11-25 18:22:04,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430bade1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:04, skipping insertion in model container [2021-11-25 18:22:04,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:04" (3/3) ... [2021-11-25 18:22:04,082 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-2.i [2021-11-25 18:22:04,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:22:04,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-25 18:22:04,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:22:04,194 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 18:22:04,194 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-25 18:22:04,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 156 states have internal predecessors, (247), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 18:22:04,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:22:04,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:04,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:22:04,223 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 18:22:04,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:04,232 INFO L85 PathProgramCache]: Analyzing trace with hash 31387996, now seen corresponding path program 1 times [2021-11-25 18:22:04,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:04,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295620165] [2021-11-25 18:22:04,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:04,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:04,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:22:04,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990032032] [2021-11-25 18:22:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:04,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:04,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:04,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:04,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:22:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:04,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 18:22:04,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:04,728 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 18:22:04,777 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 18:22:04,784 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 18:22:04,795 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 18:22:04,807 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 18:22:04,957 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 18:22:05,002 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 15 treesize of output 11 [2021-11-25 18:22:05,009 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 18:22:05,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:05,074 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 22 treesize of output 10 [2021-11-25 18:22:05,086 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 18:22:05,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:05,087 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:05,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295620165] [2021-11-25 18:22:05,088 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:22:05,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990032032] [2021-11-25 18:22:05,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990032032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:05,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:05,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:22:05,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091212798] [2021-11-25 18:22:05,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:05,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:22:05,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:05,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:22:05,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:22:05,147 INFO L87 Difference]: Start difference. First operand has 176 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 156 states have internal predecessors, (247), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) 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 18:22:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:06,482 INFO L93 Difference]: Finished difference Result 416 states and 678 transitions. [2021-11-25 18:22:06,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:22:06,485 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 18:22:06,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:06,496 INFO L225 Difference]: With dead ends: 416 [2021-11-25 18:22:06,496 INFO L226 Difference]: Without dead ends: 240 [2021-11-25 18:22:06,500 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 18:22:06,503 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 68 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:06,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 467 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:22:06,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-25 18:22:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 177. [2021-11-25 18:22:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 144 states have (on average 1.2430555555555556) internal successors, (179), 158 states have internal predecessors, (179), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-25 18:22:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 209 transitions. [2021-11-25 18:22:06,572 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 209 transitions. Word has length 4 [2021-11-25 18:22:06,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:06,572 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 209 transitions. [2021-11-25 18:22:06,573 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 18:22:06,573 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 209 transitions. [2021-11-25 18:22:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 18:22:06,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:06,577 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 18:22:06,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:06,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 18:22:06,795 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 18:22:06,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:06,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2011390594, now seen corresponding path program 1 times [2021-11-25 18:22:06,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:06,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103882092] [2021-11-25 18:22:06,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:06,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:06,861 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:22:06,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73435282] [2021-11-25 18:22:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:06,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:06,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:06,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:06,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:22:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:07,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:22:07,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:07,209 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 18:22:07,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:07,209 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:07,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103882092] [2021-11-25 18:22:07,210 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:22:07,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73435282] [2021-11-25 18:22:07,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73435282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:07,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:07,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:22:07,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006220242] [2021-11-25 18:22:07,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:07,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:22:07,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:22:07,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:22:07,215 INFO L87 Difference]: Start difference. First operand 177 states and 209 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 18:22:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:08,566 INFO L93 Difference]: Finished difference Result 311 states and 367 transitions. [2021-11-25 18:22:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:08,569 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 18:22:08,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:08,572 INFO L225 Difference]: With dead ends: 311 [2021-11-25 18:22:08,573 INFO L226 Difference]: Without dead ends: 309 [2021-11-25 18:22:08,573 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 18:22:08,575 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 139 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:08,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 528 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:22:08,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-25 18:22:08,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2021-11-25 18:22:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 255 states have (on average 1.2352941176470589) internal successors, (315), 270 states have internal predecessors, (315), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-25 18:22:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 363 transitions. [2021-11-25 18:22:08,606 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 363 transitions. Word has length 18 [2021-11-25 18:22:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:08,606 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 363 transitions. [2021-11-25 18:22:08,607 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 18:22:08,607 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 363 transitions. [2021-11-25 18:22:08,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:22:08,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:08,608 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 18:22:08,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:08,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:08,827 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 18:22:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:08,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2071401060, now seen corresponding path program 1 times [2021-11-25 18:22:08,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:08,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006110347] [2021-11-25 18:22:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:08,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:08,873 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:22:08,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775200191] [2021-11-25 18:22:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:08,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:08,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:08,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:08,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:22:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:09,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:22:09,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:09,169 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 18:22:09,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:09,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:09,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006110347] [2021-11-25 18:22:09,170 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:22:09,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775200191] [2021-11-25 18:22:09,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775200191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:09,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:09,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:22:09,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650916254] [2021-11-25 18:22:09,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:09,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:22:09,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:22:09,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:22:09,173 INFO L87 Difference]: Start difference. First operand 299 states and 363 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 18:22:12,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:12,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:12,076 INFO L93 Difference]: Finished difference Result 537 states and 655 transitions. [2021-11-25 18:22:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:12,099 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 18:22:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:12,103 INFO L225 Difference]: With dead ends: 537 [2021-11-25 18:22:12,103 INFO L226 Difference]: Without dead ends: 535 [2021-11-25 18:22:12,104 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 18:22:12,106 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 174 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:12,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 535 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-25 18:22:12,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-11-25 18:22:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 524. [2021-11-25 18:22:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 459 states have (on average 1.2352941176470589) internal successors, (567), 477 states have internal predecessors, (567), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-25 18:22:12,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 652 transitions. [2021-11-25 18:22:12,149 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 652 transitions. Word has length 19 [2021-11-25 18:22:12,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:12,149 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 652 transitions. [2021-11-25 18:22:12,150 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 18:22:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 652 transitions. [2021-11-25 18:22:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 18:22:12,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:12,152 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 18:22:12,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:12,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:12,379 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 18:22:12,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:12,379 INFO L85 PathProgramCache]: Analyzing trace with hash 949063289, now seen corresponding path program 1 times [2021-11-25 18:22:12,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:12,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131028650] [2021-11-25 18:22:12,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:12,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:12,506 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 18:22:12,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:12,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131028650] [2021-11-25 18:22:12,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131028650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:12,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:12,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:22:12,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464090136] [2021-11-25 18:22:12,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:12,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:22:12,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:12,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:22:12,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:22:12,509 INFO L87 Difference]: Start difference. First operand 524 states and 652 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 18:22:14,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:15,158 INFO L93 Difference]: Finished difference Result 871 states and 1093 transitions. [2021-11-25 18:22:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:22:15,164 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 18:22:15,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:15,169 INFO L225 Difference]: With dead ends: 871 [2021-11-25 18:22:15,170 INFO L226 Difference]: Without dead ends: 702 [2021-11-25 18:22:15,172 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 18:22:15,173 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 67 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:15,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 489 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 18:22:15,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-25 18:22:15,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 524. [2021-11-25 18:22:15,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 459 states have (on average 1.233115468409586) internal successors, (566), 477 states have internal predecessors, (566), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-25 18:22:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 651 transitions. [2021-11-25 18:22:15,210 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 651 transitions. Word has length 24 [2021-11-25 18:22:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:15,211 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 651 transitions. [2021-11-25 18:22:15,211 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 18:22:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 651 transitions. [2021-11-25 18:22:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 18:22:15,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:15,213 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 18:22:15,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:22:15,213 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 18:22:15,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:15,214 INFO L85 PathProgramCache]: Analyzing trace with hash -12375280, now seen corresponding path program 1 times [2021-11-25 18:22:15,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:15,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550872000] [2021-11-25 18:22:15,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:15,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:15,241 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:22:15,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022163532] [2021-11-25 18:22:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:15,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:15,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:15,259 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:15,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:22:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:15,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:22:15,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:15,639 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 18:22:15,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:15,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:15,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550872000] [2021-11-25 18:22:15,640 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:22:15,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022163532] [2021-11-25 18:22:15,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022163532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:15,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:15,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:22:15,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297143153] [2021-11-25 18:22:15,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:15,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:15,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:15,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:15,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:15,654 INFO L87 Difference]: Start difference. First operand 524 states and 651 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 18:22:16,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:16,366 INFO L93 Difference]: Finished difference Result 550 states and 671 transitions. [2021-11-25 18:22:16,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:16,371 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 18:22:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:16,375 INFO L225 Difference]: With dead ends: 550 [2021-11-25 18:22:16,376 INFO L226 Difference]: Without dead ends: 549 [2021-11-25 18:22:16,376 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 18:22:16,377 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 144 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:16,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 359 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 18:22:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-25 18:22:16,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 539. [2021-11-25 18:22:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 469 states have (on average 1.2302771855010661) internal successors, (577), 488 states have internal predecessors, (577), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-11-25 18:22:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 668 transitions. [2021-11-25 18:22:16,410 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 668 transitions. Word has length 27 [2021-11-25 18:22:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:16,411 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 668 transitions. [2021-11-25 18:22:16,411 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 18:22:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 668 transitions. [2021-11-25 18:22:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 18:22:16,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:16,413 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 18:22:16,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:16,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:16,627 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 18:22:16,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash -383633619, now seen corresponding path program 1 times [2021-11-25 18:22:16,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:16,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071358851] [2021-11-25 18:22:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:16,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:16,677 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:22:16,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295455122] [2021-11-25 18:22:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:16,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:16,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:16,692 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:16,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:22:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:16,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:22:16,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:17,051 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 18:22:17,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:17,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:17,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071358851] [2021-11-25 18:22:17,051 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:22:17,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295455122] [2021-11-25 18:22:17,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295455122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:17,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:17,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:22:17,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845147540] [2021-11-25 18:22:17,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:17,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:17,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:17,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:17,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:17,054 INFO L87 Difference]: Start difference. First operand 539 states and 668 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 18:22:18,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:18,044 INFO L93 Difference]: Finished difference Result 539 states and 668 transitions. [2021-11-25 18:22:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:18,049 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 18:22:18,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:18,053 INFO L225 Difference]: With dead ends: 539 [2021-11-25 18:22:18,053 INFO L226 Difference]: Without dead ends: 538 [2021-11-25 18:22:18,054 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 18:22:18,055 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:18,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 172 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:22:18,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-25 18:22:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2021-11-25 18:22:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 469 states have (on average 1.2260127931769722) internal successors, (575), 487 states have internal predecessors, (575), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-11-25 18:22:18,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 666 transitions. [2021-11-25 18:22:18,087 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 666 transitions. Word has length 28 [2021-11-25 18:22:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:18,087 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 666 transitions. [2021-11-25 18:22:18,087 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 18:22:18,088 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 666 transitions. [2021-11-25 18:22:18,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 18:22:18,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:18,089 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 18:22:18,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:18,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 18:22:18,303 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 18:22:18,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash -259574453, now seen corresponding path program 1 times [2021-11-25 18:22:18,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:18,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670618062] [2021-11-25 18:22:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:18,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:18,454 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:22:18,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355495852] [2021-11-25 18:22:18,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:18,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:18,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:18,470 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:18,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:22:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:19,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:22:19,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:19,258 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 18:22:19,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:19,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:19,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670618062] [2021-11-25 18:22:19,262 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:22:19,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355495852] [2021-11-25 18:22:19,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355495852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:19,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:19,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:22:19,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326615601] [2021-11-25 18:22:19,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:19,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:19,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:19,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:19,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:19,265 INFO L87 Difference]: Start difference. First operand 538 states and 666 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 18:22:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:20,672 INFO L93 Difference]: Finished difference Result 1000 states and 1234 transitions. [2021-11-25 18:22:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:20,676 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 18:22:20,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:20,680 INFO L225 Difference]: With dead ends: 1000 [2021-11-25 18:22:20,680 INFO L226 Difference]: Without dead ends: 467 [2021-11-25 18:22:20,682 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 18:22:20,683 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 68 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:20,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 331 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:22:20,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-25 18:22:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 415. [2021-11-25 18:22:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 363 states have (on average 1.2148760330578512) internal successors, (441), 379 states have internal predecessors, (441), 30 states have call successors, (30), 11 states have call predecessors, (30), 9 states have return successors, (33), 26 states have call predecessors, (33), 30 states have call successors, (33) [2021-11-25 18:22:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 504 transitions. [2021-11-25 18:22:20,708 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 504 transitions. Word has length 28 [2021-11-25 18:22:20,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:20,708 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 504 transitions. [2021-11-25 18:22:20,708 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 18:22:20,708 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 504 transitions. [2021-11-25 18:22:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 18:22:20,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:20,710 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 18:22:20,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:20,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 18:22:20,923 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 18:22:20,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:20,923 INFO L85 PathProgramCache]: Analyzing trace with hash 107922983, now seen corresponding path program 1 times [2021-11-25 18:22:20,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:20,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950348284] [2021-11-25 18:22:20,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:20,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:20,967 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:22:20,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767781896] [2021-11-25 18:22:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:20,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:20,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:20,969 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:21,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:22:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:21,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 18:22:21,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:21,511 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 18:22:21,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:22:21,737 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 18:22:21,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:21,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950348284] [2021-11-25 18:22:21,738 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:22:21,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767781896] [2021-11-25 18:22:21,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767781896] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:22:21,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [629026280] [2021-11-25 18:22:21,761 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 18:22:21,761 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:22:21,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:22:21,770 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:22:21,771 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:22:21,833 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 18:22:21,839 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 18:22:21,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:21,873 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 18:22:21,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2021-11-25 18:22:21,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:21,921 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:22:21,922 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 18:22:21,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:21,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:21,948 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 18:22:21,957 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 18:22:22,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,052 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 18:22:22,052 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 18:22:22,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,075 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 18:22:22,087 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 18:22:22,099 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 18:22:22,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,114 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 18:22:22,133 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 18:22:22,190 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 18:22:22,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,209 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 18:22:22,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,225 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 18:22:22,248 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 18:22:22,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,677 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 18:22:22,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,699 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 18:22:22,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,726 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 18:22:22,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,753 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 18:22:22,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,773 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 18:22:22,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,798 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 18:22:22,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,857 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 18:22:22,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,883 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 18:22:22,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,904 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 18:22:22,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,934 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 18:22:22,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,963 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 18:22:22,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:22,992 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 18:22:23,128 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 18:22:23,133 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 18:22:23,138 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 18:22:23,153 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 18:22:23,162 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 18:22:23,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,229 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 18:22:23,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2021-11-25 18:22:23,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,262 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 18:22:23,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,279 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 18:22:23,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,295 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 18:22:23,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,312 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 18:22:23,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,328 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 18:22:23,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,488 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 18:22:23,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,503 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 18:22:23,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,519 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 18:22:23,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,538 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 18:22:23,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,560 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 18:22:23,575 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 18:22:23,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:23,594 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 18:22:23,676 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 18:22:23,686 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 18:22:23,695 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 18:22:23,928 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 56 for LOIs [2021-11-25 18:22:24,025 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 129 for LOIs [2021-11-25 18:22:24,337 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:22:28,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [629026280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:28,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:22:28,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [6, 7] total 32 [2021-11-25 18:22:28,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776509083] [2021-11-25 18:22:28,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:28,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 18:22:28,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:28,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 18:22:28,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:22:28,502 INFO L87 Difference]: Start difference. First operand 415 states and 504 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 18:22:34,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:34,512 INFO L93 Difference]: Finished difference Result 819 states and 998 transitions. [2021-11-25 18:22:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:22:34,513 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 18:22:34,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:34,516 INFO L225 Difference]: With dead ends: 819 [2021-11-25 18:22:34,516 INFO L226 Difference]: Without dead ends: 412 [2021-11-25 18:22:34,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:22:34,518 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 12 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 627 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:34,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1515 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 700 Invalid, 0 Unknown, 627 Unchecked, 5.9s Time] [2021-11-25 18:22:34,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-25 18:22:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-11-25 18:22:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 360 states have (on average 1.211111111111111) internal successors, (436), 375 states have internal predecessors, (436), 30 states have call successors, (30), 11 states have call predecessors, (30), 9 states have return successors, (33), 26 states have call predecessors, (33), 30 states have call successors, (33) [2021-11-25 18:22:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 499 transitions. [2021-11-25 18:22:34,542 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 499 transitions. Word has length 34 [2021-11-25 18:22:34,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:34,543 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 499 transitions. [2021-11-25 18:22:34,543 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 18:22:34,543 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 499 transitions. [2021-11-25 18:22:34,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 18:22:34,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:34,544 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 18:22:34,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:34,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:34,759 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 18:22:34,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:34,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1157443849, now seen corresponding path program 1 times [2021-11-25 18:22:34,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:34,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911760461] [2021-11-25 18:22:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:34,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:34,798 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:22:34,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093778963] [2021-11-25 18:22:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:34,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:34,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:34,807 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:34,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 18:22:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:35,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:22:35,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:35,335 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 18:22:35,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:35,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:35,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911760461] [2021-11-25 18:22:35,336 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:22:35,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093778963] [2021-11-25 18:22:35,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093778963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:35,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:35,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:22:35,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743755859] [2021-11-25 18:22:35,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:35,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:22:35,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:35,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:22:35,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:22:35,340 INFO L87 Difference]: Start difference. First operand 412 states and 499 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 18:22:38,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:38,507 INFO L93 Difference]: Finished difference Result 760 states and 929 transitions. [2021-11-25 18:22:38,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:38,513 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 18:22:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:38,518 INFO L225 Difference]: With dead ends: 760 [2021-11-25 18:22:38,518 INFO L226 Difference]: Without dead ends: 758 [2021-11-25 18:22:38,519 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 18:22:38,520 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 184 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:38,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 798 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-25 18:22:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-11-25 18:22:38,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 746. [2021-11-25 18:22:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 668 states have (on average 1.2110778443113772) internal successors, (809), 684 states have internal predecessors, (809), 51 states have call successors, (51), 18 states have call predecessors, (51), 14 states have return successors, (62), 43 states have call predecessors, (62), 51 states have call successors, (62) [2021-11-25 18:22:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 922 transitions. [2021-11-25 18:22:38,559 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 922 transitions. Word has length 37 [2021-11-25 18:22:38,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:38,560 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 922 transitions. [2021-11-25 18:22:38,560 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 18:22:38,560 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 922 transitions. [2021-11-25 18:22:38,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-25 18:22:38,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:38,562 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 18:22:38,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:38,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:38,787 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 18:22:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:38,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1785745275, now seen corresponding path program 1 times [2021-11-25 18:22:38,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:38,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723574866] [2021-11-25 18:22:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:38,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:38,832 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:22:38,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836069929] [2021-11-25 18:22:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:38,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:38,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:38,834 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:38,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 18:22:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:39,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:22:39,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:39,414 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 18:22:39,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:22:39,596 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 18:22:39,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:39,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723574866] [2021-11-25 18:22:39,596 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:22:39,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836069929] [2021-11-25 18:22:39,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836069929] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:22:39,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2027261881] [2021-11-25 18:22:39,600 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-25 18:22:39,600 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:22:39,600 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:22:39,601 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:22:39,601 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:22:39,641 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 18:22:39,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:39,682 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-25 18:22:39,682 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 18:22:39,695 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 18:22:39,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,709 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 23 treesize of output 17 [2021-11-25 18:22:39,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,727 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 29 treesize of output 21 [2021-11-25 18:22:39,733 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 18:22:39,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2021-11-25 18:22:39,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,799 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:22:39,800 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 18:22:39,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,818 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 18:22:39,828 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 18:22:39,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,956 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 18:22:39,957 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 18:22:39,975 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 18:22:39,984 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 18:22:39,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:39,999 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 128 treesize of output 112 [2021-11-25 18:22:40,010 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 18:22:40,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,031 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 18:22:40,096 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 18:22:40,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,117 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 175 treesize of output 145 [2021-11-25 18:22:40,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,131 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 18:22:40,157 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 18:22:40,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,660 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 18:22:40,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,677 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 195 treesize of output 163 [2021-11-25 18:22:40,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,699 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 201 treesize of output 169 [2021-11-25 18:22:40,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,720 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 44 treesize of output 40 [2021-11-25 18:22:40,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,743 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 18:22:40,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 18:22:40,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,843 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 208 treesize of output 172 [2021-11-25 18:22:40,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,864 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 202 treesize of output 170 [2021-11-25 18:22:40,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,892 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 18:22:40,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,919 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 18:22:40,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,952 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 18:22:40,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:40,974 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 18:22:41,197 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 18:22:41,207 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 18:22:41,211 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 18:22:41,236 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 18:22:41,240 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 18:22:41,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,300 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 18:22:41,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,335 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 18:22:41,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,355 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 18:22:41,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,374 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 18:22:41,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,392 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 189 treesize of output 141 [2021-11-25 18:22:41,405 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 81 treesize of output 69 [2021-11-25 18:22:41,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,424 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 18:22:41,455 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 18:22:41,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,698 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 18:22:41,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,710 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 18:22:41,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,724 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 18:22:41,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,739 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 189 treesize of output 141 [2021-11-25 18:22:41,751 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 81 treesize of output 69 [2021-11-25 18:22:41,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,769 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 18:22:41,803 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 18:22:41,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,824 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 18:22:41,944 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 18:22:41,986 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 18:22:42,042 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 18:22:43,259 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 80 for LOIs [2021-11-25 18:22:43,395 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 141 for LOIs [2021-11-25 18:22:44,291 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 18:22:44,310 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 18:22:44,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:44,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:44,330 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 192 treesize of output 158 [2021-11-25 18:22:44,770 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 18:22:44,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:44,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:44,790 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 192 treesize of output 158 [2021-11-25 18:22:44,810 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 18:22:45,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:45,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:45,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 158 [2021-11-25 18:22:45,411 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 18:22:45,430 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 18:22:45,637 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 133 for LOIs [2021-11-25 18:22:45,789 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:22:51,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2027261881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:51,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:22:51,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 5] total 31 [2021-11-25 18:22:51,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684365434] [2021-11-25 18:22:51,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:51,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 18:22:51,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:51,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 18:22:51,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:22:51,618 INFO L87 Difference]: Start difference. First operand 746 states and 922 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 18:22:55,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:57,620 WARN L534 Checker$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 18:23:00,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:23:01,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:01,648 INFO L93 Difference]: Finished difference Result 1464 states and 1817 transitions. [2021-11-25 18:23:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:23:01,649 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 18:23:01,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:01,654 INFO L225 Difference]: With dead ends: 1464 [2021-11-25 18:23:01,654 INFO L226 Difference]: Without dead ends: 748 [2021-11-25 18:23:01,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:23:01,657 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 9 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 794 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:01,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1788 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 762 Invalid, 1 Unknown, 794 Unchecked, 10.0s Time] [2021-11-25 18:23:01,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-11-25 18:23:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2021-11-25 18:23:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 670 states have (on average 1.2104477611940299) internal successors, (811), 686 states have internal predecessors, (811), 51 states have call successors, (51), 18 states have call predecessors, (51), 14 states have return successors, (62), 43 states have call predecessors, (62), 51 states have call successors, (62) [2021-11-25 18:23:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 924 transitions. [2021-11-25 18:23:01,693 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 924 transitions. Word has length 46 [2021-11-25 18:23:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:01,694 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 924 transitions. [2021-11-25 18:23:01,694 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 18:23:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 924 transitions. [2021-11-25 18:23:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 18:23:01,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:01,695 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 18:23:01,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:01,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:01,923 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 18:23:01,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:01,923 INFO L85 PathProgramCache]: Analyzing trace with hash 930438946, now seen corresponding path program 1 times [2021-11-25 18:23:01,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:01,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500391980] [2021-11-25 18:23:01,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:01,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:01,966 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:23:01,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50991206] [2021-11-25 18:23:01,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:01,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:01,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:01,967 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:01,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7cbc2-88dc-452c-834e-3b95fa4e29d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:23:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:02,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:23:02,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:02,510 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 18:23:02,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:02,650 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 18:23:02,651 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:02,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500391980] [2021-11-25 18:23:02,651 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:23:02,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50991206] [2021-11-25 18:23:02,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50991206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:02,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [271258292] [2021-11-25 18:23:02,655 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-25 18:23:02,655 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:02,655 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:02,656 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:02,656 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:23:02,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,702 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 18:23:02,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2021-11-25 18:23:02,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:02,738 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-25 18:23:02,738 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 18:23:02,748 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 18:23:02,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,760 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 23 treesize of output 17 [2021-11-25 18:23:02,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,778 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 29 treesize of output 21 [2021-11-25 18:23:02,785 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 18:23:02,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2021-11-25 18:23:02,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,854 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:23:02,855 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 18:23:02,863 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 18:23:02,871 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 18:23:02,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,944 INFO L354 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2021-11-25 18:23:02,944 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 128 treesize of output 132 [2021-11-25 18:23:02,960 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 18:23:03,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:03,026 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 106 treesize of output 100 [2021-11-25 18:23:03,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,181 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-25 18:23:03,181 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 18:23:03,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,258 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 18:23:03,258 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 18:23:03,278 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 18:23:03,291 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 15 treesize of output 1 [2021-11-25 18:23:03,386 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 18:23:03,408 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 18:23:03,416 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 18:23:03,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,814 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 18:23:03,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,833 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 18:23:03,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,849 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 18:23:03,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,861 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 18:23:03,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,903 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 18:23:03,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,916 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 18:23:03,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,944 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 18:23:04,083 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 18:23:04,087 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 18:23:04,090 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 18:23:04,108 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 18:23:04,112 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 18:23:04,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,153 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 18:23:04,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,164 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 18:23:04,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,184 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 18:23:04,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,315 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 18:23:04,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,349 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 18:23:04,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,362 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 18:23:04,411 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 18:23:04,421 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 18:23:04,437 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 18:23:04,497 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 18:23:04,502 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 18:23:04,514 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 18:23:04,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,539 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 18:23:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,549 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 18:23:04,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:04,557 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 18:23:04,582 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 18:23:04,587 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 18:23:04,592 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 18:23:04,640 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 18:23:04,649 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 18:23:04,739 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 18:23:04,749 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 18:23:06,314 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-25 18:23:06,314 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 18:23:06,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:07,763 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-25 18:23:07,764 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 18:23:07,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:09,339 INFO L354 Elim1Store]: treesize reduction 1060, result has 37.8 percent of original size [2021-11-25 18:23:09,339 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 18:23:09,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:09,616 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-25 18:23:09,616 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 36 treesize of output 20 [2021-11-25 18:23:09,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:09,805 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:09,805 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