./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:23:09,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:23:09,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:23:09,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:23:09,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:23:09,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:23:09,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:23:09,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:23:09,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:23:09,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:23:09,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:23:09,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:23:09,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:23:09,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:23:09,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:23:09,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:23:09,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:23:09,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:23:09,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:23:09,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:23:09,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:23:09,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:23:09,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:23:09,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:23:09,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:23:09,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:23:09,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:23:09,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:23:09,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:23:09,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:23:09,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:23:09,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:23:09,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:23:09,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:23:09,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:23:09,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:23:09,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:23:09,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:23:09,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:23:09,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:23:09,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:23:09,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 18:23:09,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:23:09,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:23:09,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:23:09,799 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:23:09,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:23:09,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:23:09,800 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:23:09,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:23:09,800 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:23:09,800 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:23:09,801 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:23:09,801 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:23:09,801 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:23:09,801 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:23:09,801 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:23:09,802 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:23:09,802 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:23:09,802 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:23:09,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:23:09,803 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:23:09,803 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:23:09,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:23:09,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:23:09,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:23:09,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:23:09,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:23:09,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:23:09,804 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 18:23:09,804 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:23:09,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:23:09,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:23:09,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:23:09,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:23:09,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:23:09,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:23:09,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:23:09,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:23:09,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:23:09,806 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:23:09,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:23:09,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:23:09,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:23:09,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:23:09,807 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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2021-11-25 18:23:10,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:23:10,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:23:10,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:23:10,077 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:23:10,078 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:23:10,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-25 18:23:10,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/data/3ee53c3d8/529d4f07be2b4cd0906df9b0b8172710/FLAG61bc8701f [2021-11-25 18:23:10,877 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:23:10,878 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-25 18:23:10,896 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/data/3ee53c3d8/529d4f07be2b4cd0906df9b0b8172710/FLAG61bc8701f [2021-11-25 18:23:11,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/data/3ee53c3d8/529d4f07be2b4cd0906df9b0b8172710 [2021-11-25 18:23:11,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:23:11,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:23:11,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:23:11,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:23:11,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:23:11,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:11" (1/1) ... [2021-11-25 18:23:11,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be3b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:11, skipping insertion in model container [2021-11-25 18:23:11,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:11" (1/1) ... [2021-11-25 18:23:11,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:23:11,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:23:11,715 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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-25 18:23:11,730 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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-25 18:23:11,843 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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-25 18:23:11,844 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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-25 18:23:11,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:23:11,867 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:23:11,894 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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-25 18:23:11,896 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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-25 18:23:11,947 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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-25 18:23:11,947 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_f7c0baa9-db81-4981-a335-ebfcccbec7dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-25 18:23:11,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:23:12,029 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:23:12,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12 WrapperNode [2021-11-25 18:23:12,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:23:12,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:23:12,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:23:12,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:23:12,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12" (1/1) ... [2021-11-25 18:23:12,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12" (1/1) ... [2021-11-25 18:23:12,192 INFO L137 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1209 [2021-11-25 18:23:12,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:23:12,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:23:12,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:23:12,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:23:12,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12" (1/1) ... [2021-11-25 18:23:12,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12" (1/1) ... [2021-11-25 18:23:12,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12" (1/1) ... [2021-11-25 18:23:12,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12" (1/1) ... [2021-11-25 18:23:12,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12" (1/1) ... [2021-11-25 18:23:12,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12" (1/1) ... [2021-11-25 18:23:12,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12" (1/1) ... [2021-11-25 18:23:12,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:23:12,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:23:12,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:23:12,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:23:12,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12" (1/1) ... [2021-11-25 18:23:12,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:23:12,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:12,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:23:12,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:23:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:23:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 18:23:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:23:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:23:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-25 18:23:12,417 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-25 18:23:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:23:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:23:12,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:23:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:23:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:23:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:23:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-25 18:23:12,418 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-25 18:23:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:23:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-25 18:23:12,419 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-25 18:23:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:23:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:23:12,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:23:12,725 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:23:12,726 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:23:13,647 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:23:14,134 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:23:14,134 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-25 18:23:14,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:14 BoogieIcfgContainer [2021-11-25 18:23:14,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:23:14,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:23:14,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:23:14,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:23:14,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:23:11" (1/3) ... [2021-11-25 18:23:14,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa3299b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:14, skipping insertion in model container [2021-11-25 18:23:14,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:12" (2/3) ... [2021-11-25 18:23:14,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa3299b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:14, skipping insertion in model container [2021-11-25 18:23:14,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:14" (3/3) ... [2021-11-25 18:23:14,150 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2021-11-25 18:23:14,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:23:14,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-25 18:23:14,221 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:23:14,229 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 18:23:14,229 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-25 18:23:14,253 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 18:23:14,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:23:14,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:14,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:23:14,257 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 18:23:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:14,265 INFO L85 PathProgramCache]: Analyzing trace with hash 31387996, now seen corresponding path program 1 times [2021-11-25 18:23:14,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:14,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330950902] [2021-11-25 18:23:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:14,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:14,422 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:23:14,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23152753] [2021-11-25 18:23:14,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:14,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:14,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:14,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:14,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:23:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:14,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 18:23:14,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:14,722 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 18:23:14,756 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 18:23:14,757 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 18:23:14,765 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 18:23:14,780 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 18:23:14,925 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 18:23:14,956 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 18:23:14,960 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 18:23:15,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:15,004 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 18:23:15,015 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 18:23:15,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:15,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:15,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330950902] [2021-11-25 18:23:15,016 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:23:15,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23152753] [2021-11-25 18:23:15,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23152753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:15,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:15,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:23:15,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544500255] [2021-11-25 18:23:15,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:15,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:23:15,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:15,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:23:15,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:23:15,053 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 18:23:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:16,260 INFO L93 Difference]: Finished difference Result 416 states and 678 transitions. [2021-11-25 18:23:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:23:16,262 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 18:23:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:16,272 INFO L225 Difference]: With dead ends: 416 [2021-11-25 18:23:16,272 INFO L226 Difference]: Without dead ends: 240 [2021-11-25 18:23:16,276 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 18:23:16,303 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 68 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:16,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 467 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:23:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-25 18:23:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 177. [2021-11-25 18:23:16,381 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 18:23:16,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 209 transitions. [2021-11-25 18:23:16,385 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 209 transitions. Word has length 4 [2021-11-25 18:23:16,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:16,386 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 209 transitions. [2021-11-25 18:23:16,386 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 18:23:16,386 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 209 transitions. [2021-11-25 18:23:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 18:23:16,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:16,388 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 18:23:16,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:16,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:16,616 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 18:23:16,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:16,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2011390594, now seen corresponding path program 1 times [2021-11-25 18:23:16,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:16,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808081497] [2021-11-25 18:23:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:16,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:16,658 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:23:16,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678034275] [2021-11-25 18:23:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:16,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:16,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:16,684 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:16,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:23:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:16,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:23:16,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:16,973 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 18:23:16,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:16,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:16,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808081497] [2021-11-25 18:23:16,974 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:23:16,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678034275] [2021-11-25 18:23:16,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678034275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:16,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:16,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:23:16,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571367558] [2021-11-25 18:23:16,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:16,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:23:16,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:23:16,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:23:16,978 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 18:23:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:18,217 INFO L93 Difference]: Finished difference Result 311 states and 367 transitions. [2021-11-25 18:23:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:23:18,224 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 18:23:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:18,228 INFO L225 Difference]: With dead ends: 311 [2021-11-25 18:23:18,228 INFO L226 Difference]: Without dead ends: 309 [2021-11-25 18:23:18,229 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 18:23:18,230 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 139 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:18,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 528 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:23:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-25 18:23:18,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2021-11-25 18:23:18,269 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 18:23:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 363 transitions. [2021-11-25 18:23:18,276 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 363 transitions. Word has length 18 [2021-11-25 18:23:18,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:18,277 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 363 transitions. [2021-11-25 18:23:18,277 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 18:23:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 363 transitions. [2021-11-25 18:23:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:23:18,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:18,279 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 18:23:18,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:18,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:18,496 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 18:23:18,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2071401060, now seen corresponding path program 1 times [2021-11-25 18:23:18,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:18,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240136294] [2021-11-25 18:23:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:18,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:18,552 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:23:18,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810883472] [2021-11-25 18:23:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:18,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:18,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:18,555 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:18,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:23:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:18,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:23:18,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:18,839 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 18:23:18,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:18,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:18,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240136294] [2021-11-25 18:23:18,839 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:23:18,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810883472] [2021-11-25 18:23:18,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810883472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:18,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:18,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:23:18,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182580601] [2021-11-25 18:23:18,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:18,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:23:18,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:18,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:23:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:23:18,842 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 18:23:21,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:23:21,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:21,495 INFO L93 Difference]: Finished difference Result 537 states and 655 transitions. [2021-11-25 18:23:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:23:21,516 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 18:23:21,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:21,521 INFO L225 Difference]: With dead ends: 537 [2021-11-25 18:23:21,521 INFO L226 Difference]: Without dead ends: 535 [2021-11-25 18:23:21,522 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 18:23:21,523 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 174 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:21,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 535 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 18:23:21,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-11-25 18:23:21,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 524. [2021-11-25 18:23:21,573 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 18:23:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 652 transitions. [2021-11-25 18:23:21,578 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 652 transitions. Word has length 19 [2021-11-25 18:23:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:21,578 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 652 transitions. [2021-11-25 18:23:21,578 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 18:23:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 652 transitions. [2021-11-25 18:23:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 18:23:21,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:21,580 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 18:23:21,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-25 18:23:21,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:21,796 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 18:23:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash 949063289, now seen corresponding path program 1 times [2021-11-25 18:23:21,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:21,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713979303] [2021-11-25 18:23:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:21,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:21,933 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 18:23:21,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:21,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713979303] [2021-11-25 18:23:21,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713979303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:21,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:21,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:21,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259407977] [2021-11-25 18:23:21,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:21,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:23:21,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:21,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:23:21,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:23:21,939 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 18:23:24,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:23:24,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:24,388 INFO L93 Difference]: Finished difference Result 871 states and 1093 transitions. [2021-11-25 18:23:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:23:24,391 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 18:23:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:24,397 INFO L225 Difference]: With dead ends: 871 [2021-11-25 18:23:24,397 INFO L226 Difference]: Without dead ends: 702 [2021-11-25 18:23:24,398 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 18:23:24,399 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 67 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:24,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 489 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:23:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-25 18:23:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 524. [2021-11-25 18:23:24,434 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 18:23:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 651 transitions. [2021-11-25 18:23:24,438 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 651 transitions. Word has length 24 [2021-11-25 18:23:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:24,438 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 651 transitions. [2021-11-25 18:23:24,439 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 18:23:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 651 transitions. [2021-11-25 18:23:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 18:23:24,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:24,440 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 18:23:24,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:23:24,441 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 18:23:24,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:24,441 INFO L85 PathProgramCache]: Analyzing trace with hash -12375280, now seen corresponding path program 1 times [2021-11-25 18:23:24,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:24,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864991023] [2021-11-25 18:23:24,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:24,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:24,469 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:23:24,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442767307] [2021-11-25 18:23:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:24,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:24,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:24,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:24,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:23:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:24,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:23:24,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:24,787 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 18:23:24,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:24,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:24,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864991023] [2021-11-25 18:23:24,788 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:23:24,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442767307] [2021-11-25 18:23:24,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442767307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:24,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:24,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:23:24,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751850971] [2021-11-25 18:23:24,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:24,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:24,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:24,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:24,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:24,793 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 18:23:25,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:25,448 INFO L93 Difference]: Finished difference Result 550 states and 671 transitions. [2021-11-25 18:23:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:25,452 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 18:23:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:25,456 INFO L225 Difference]: With dead ends: 550 [2021-11-25 18:23:25,456 INFO L226 Difference]: Without dead ends: 549 [2021-11-25 18:23:25,457 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 18:23:25,458 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, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:25,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 359 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:23:25,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-25 18:23:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 539. [2021-11-25 18:23:25,500 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 18:23:25,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 668 transitions. [2021-11-25 18:23:25,505 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 668 transitions. Word has length 27 [2021-11-25 18:23:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:25,505 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 668 transitions. [2021-11-25 18:23:25,505 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 18:23:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 668 transitions. [2021-11-25 18:23:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 18:23:25,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:25,507 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 18:23:25,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:25,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:25,724 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 18:23:25,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash -383633619, now seen corresponding path program 1 times [2021-11-25 18:23:25,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:25,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328406849] [2021-11-25 18:23:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:25,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:25,753 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:23:25,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762387548] [2021-11-25 18:23:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:25,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:25,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:25,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:25,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:23:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:26,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:23:26,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:26,075 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 18:23:26,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:26,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:26,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328406849] [2021-11-25 18:23:26,076 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:23:26,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762387548] [2021-11-25 18:23:26,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762387548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:26,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:26,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:23:26,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382311469] [2021-11-25 18:23:26,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:26,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:26,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:26,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:26,079 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 18:23:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:26,944 INFO L93 Difference]: Finished difference Result 539 states and 668 transitions. [2021-11-25 18:23:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:26,949 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 18:23:26,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:26,953 INFO L225 Difference]: With dead ends: 539 [2021-11-25 18:23:26,953 INFO L226 Difference]: Without dead ends: 538 [2021-11-25 18:23:26,954 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 18:23:26,955 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:26,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 172 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:23:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-25 18:23:26,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2021-11-25 18:23:26,986 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 18:23:26,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 666 transitions. [2021-11-25 18:23:26,990 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 666 transitions. Word has length 28 [2021-11-25 18:23:26,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:26,991 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 666 transitions. [2021-11-25 18:23:26,991 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 18:23:26,991 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 666 transitions. [2021-11-25 18:23:26,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 18:23:26,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:26,992 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 18:23:27,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:27,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:27,205 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 18:23:27,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:27,205 INFO L85 PathProgramCache]: Analyzing trace with hash -259574453, now seen corresponding path program 1 times [2021-11-25 18:23:27,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:27,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80404241] [2021-11-25 18:23:27,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:27,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:27,301 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:23:27,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867108140] [2021-11-25 18:23:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:27,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:27,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:27,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:27,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:23:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:27,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:23:27,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:28,024 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 18:23:28,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:28,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:28,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80404241] [2021-11-25 18:23:28,025 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:23:28,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867108140] [2021-11-25 18:23:28,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867108140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:28,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:28,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:23:28,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415889721] [2021-11-25 18:23:28,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:28,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:28,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:28,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:28,027 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 18:23:29,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:29,334 INFO L93 Difference]: Finished difference Result 1000 states and 1234 transitions. [2021-11-25 18:23:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:29,337 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 18:23:29,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:29,340 INFO L225 Difference]: With dead ends: 1000 [2021-11-25 18:23:29,340 INFO L226 Difference]: Without dead ends: 467 [2021-11-25 18:23:29,342 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 18:23:29,343 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 68 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:29,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 331 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:23:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-25 18:23:29,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 415. [2021-11-25 18:23:29,363 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 18:23:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 504 transitions. [2021-11-25 18:23:29,366 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 504 transitions. Word has length 28 [2021-11-25 18:23:29,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:29,367 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 504 transitions. [2021-11-25 18:23:29,367 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 18:23:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 504 transitions. [2021-11-25 18:23:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 18:23:29,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:29,368 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 18:23:29,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:29,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:29,595 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 18:23:29,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:29,596 INFO L85 PathProgramCache]: Analyzing trace with hash 107922983, now seen corresponding path program 1 times [2021-11-25 18:23:29,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:29,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998898919] [2021-11-25 18:23:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:29,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:29,626 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:23:29,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039522528] [2021-11-25 18:23:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:29,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:29,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:29,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:29,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:23:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:29,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 18:23:29,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:30,106 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 18:23:30,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:30,288 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 18:23:30,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:30,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998898919] [2021-11-25 18:23:30,289 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:23:30,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039522528] [2021-11-25 18:23:30,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039522528] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:30,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1267393034] [2021-11-25 18:23:30,308 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 18:23:30,308 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:30,312 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:30,317 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:30,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:23:30,390 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 18:23:30,398 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 18:23:30,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,437 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 18:23:30,438 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 18:23:30,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,485 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:23:30,485 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 18:23:30,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,501 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 18:23:30,511 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 18:23:30,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,614 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 18:23:30,614 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 18:23:30,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,645 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 18:23:30,657 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 18:23:30,668 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 18:23:30,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,686 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 18:23:30,745 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 18:23:30,815 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 18:23:30,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,834 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 18:23:30,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:30,852 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 18:23:30,877 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 18:23:31,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,323 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 18:23:31,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,345 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 18:23:31,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,372 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 18:23:31,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,427 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 18:23:31,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,449 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 18:23:31,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,475 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 18:23:31,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,535 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 18:23:31,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,561 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 18:23:31,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,582 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 18:23:31,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,612 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 18:23:31,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,640 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 18:23:31,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,668 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 18:23:31,776 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 18:23:31,780 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 18:23:31,783 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 18:23:31,794 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 18:23:31,800 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 18:23:31,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,865 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 18:23:31,879 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 18:23:31,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,895 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 18:23:31,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,911 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 18:23:31,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,927 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 18:23:31,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,943 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 18:23:31,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:31,958 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 18:23:32,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,122 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 18:23:32,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,136 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 18:23:32,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,150 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 18:23:32,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,167 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 18:23:32,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,187 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 18:23:32,204 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 18:23:32,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:32,220 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 18:23:32,289 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 18:23:32,299 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 18:23:32,307 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 18:23:32,494 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 56 for LOIs [2021-11-25 18:23:32,579 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 129 for LOIs [2021-11-25 18:23:32,917 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:23:36,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1267393034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:36,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:23:36,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [6, 7] total 32 [2021-11-25 18:23:36,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438425449] [2021-11-25 18:23:36,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:36,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 18:23:36,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:36,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 18:23:36,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:23:36,801 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 18:23:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:42,555 INFO L93 Difference]: Finished difference Result 819 states and 998 transitions. [2021-11-25 18:23:42,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:23:42,556 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 18:23:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:42,559 INFO L225 Difference]: With dead ends: 819 [2021-11-25 18:23:42,559 INFO L226 Difference]: Without dead ends: 412 [2021-11-25 18:23:42,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:23:42,561 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 12 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:42,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1515 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 700 Invalid, 0 Unknown, 627 Unchecked, 5.7s Time] [2021-11-25 18:23:42,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-25 18:23:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-11-25 18:23:42,582 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 18:23:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 499 transitions. [2021-11-25 18:23:42,585 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 499 transitions. Word has length 34 [2021-11-25 18:23:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:42,585 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 499 transitions. [2021-11-25 18:23:42,585 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 18:23:42,586 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 499 transitions. [2021-11-25 18:23:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 18:23:42,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:42,587 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 18:23:42,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:42,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 18:23:42,800 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 18:23:42,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:42,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1157443849, now seen corresponding path program 1 times [2021-11-25 18:23:42,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:42,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715122970] [2021-11-25 18:23:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:42,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:42,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:23:42,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622617905] [2021-11-25 18:23:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:42,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:42,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:42,845 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:42,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 18:23:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:43,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:23:43,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:43,285 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 18:23:43,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:43,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:43,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715122970] [2021-11-25 18:23:43,286 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:23:43,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622617905] [2021-11-25 18:23:43,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622617905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:43,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:43,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:43,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372467829] [2021-11-25 18:23:43,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:43,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:23:43,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:43,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:23:43,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:23:43,287 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 18:23:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:46,201 INFO L93 Difference]: Finished difference Result 760 states and 929 transitions. [2021-11-25 18:23:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:23:46,207 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 18:23:46,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:46,212 INFO L225 Difference]: With dead ends: 760 [2021-11-25 18:23:46,212 INFO L226 Difference]: Without dead ends: 758 [2021-11-25 18:23:46,213 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 18:23:46,214 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 184 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:46,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 798 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-25 18:23:46,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-11-25 18:23:46,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 746. [2021-11-25 18:23:46,247 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 18:23:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 922 transitions. [2021-11-25 18:23:46,252 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 922 transitions. Word has length 37 [2021-11-25 18:23:46,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:46,253 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 922 transitions. [2021-11-25 18:23:46,253 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 18:23:46,253 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 922 transitions. [2021-11-25 18:23:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-25 18:23:46,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:46,254 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 18:23:46,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:46,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:46,472 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 18:23:46,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1785745275, now seen corresponding path program 1 times [2021-11-25 18:23:46,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:46,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231725396] [2021-11-25 18:23:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:46,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:46,519 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:23:46,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798286827] [2021-11-25 18:23:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:46,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:46,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:46,542 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:46,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 18:23:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:46,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:23:46,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:47,032 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 18:23:47,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:47,184 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 18:23:47,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:47,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231725396] [2021-11-25 18:23:47,185 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:23:47,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798286827] [2021-11-25 18:23:47,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798286827] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:47,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [827909751] [2021-11-25 18:23:47,188 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-25 18:23:47,188 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:47,189 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:47,189 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:47,189 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:23:47,212 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 18:23:47,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:47,244 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-25 18:23:47,245 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 18:23:47,254 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 18:23:47,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,266 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 18:23:47,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,283 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 18:23:47,289 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 18:23:47,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,304 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 18:23:47,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,351 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:23:47,351 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 18:23:47,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,364 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 18:23:47,374 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 18:23:47,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,468 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 18:23:47,469 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 18:23:47,508 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 18:23:47,519 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 18:23:47,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,536 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 18:23:47,548 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 18:23:47,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,570 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 18:23:47,637 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 18:23:47,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,658 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 18:23:47,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:47,672 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 18:23:47,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 18:23:48,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,131 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 18:23:48,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,179 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 18:23:48,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,203 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 18:23:48,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,225 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 18:23:48,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,248 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 18:23:48,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,296 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 18:23:48,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,363 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 18:23:48,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,388 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 18:23:48,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,419 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 18:23:48,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,452 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 18:23:48,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,485 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 18:23:48,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,507 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 18:23:48,705 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 18:23:48,708 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 18:23:48,720 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 18:23:48,749 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 18:23:48,753 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 18:23:48,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,817 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 18:23:48,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,829 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 18:23:48,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,849 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 18:23:48,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,866 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 18:23:48,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,882 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 18:23:48,895 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 18:23:48,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:48,934 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 18:23:48,965 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 18:23:49,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,216 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 18:23:49,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,229 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 18:23:49,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,245 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 18:23:49,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,261 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 18:23:49,273 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 18:23:49,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,290 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 18:23:49,320 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 18:23:49,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:49,341 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 18:23:49,453 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 18:23:49,469 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 18:23:49,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 18:23:50,782 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 80 for LOIs [2021-11-25 18:23:50,888 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 141 for LOIs [2021-11-25 18:23:51,752 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 18:23:51,773 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 18:23:51,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:51,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:51,827 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 18:23:52,249 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 18:23:52,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:52,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:52,268 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 18:23:52,286 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 18:23:52,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:52,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:52,881 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 18:23:52,899 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 18:23:52,913 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 18:23:53,107 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 133 for LOIs [2021-11-25 18:23:53,254 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:23:58,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [827909751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:58,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:23:58,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 5] total 31 [2021-11-25 18:23:58,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201201943] [2021-11-25 18:23:58,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:58,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 18:23:58,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:58,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 18:23:58,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:23:58,939 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 18:24:04,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:24:06,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:24:10,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:10,192 INFO L93 Difference]: Finished difference Result 1464 states and 1817 transitions. [2021-11-25 18:24:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:24:10,193 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 18:24:10,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:10,197 INFO L225 Difference]: With dead ends: 1464 [2021-11-25 18:24:10,197 INFO L226 Difference]: Without dead ends: 748 [2021-11-25 18:24:10,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:24:10,199 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 9 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 794 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:10,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1788 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 763 Invalid, 0 Unknown, 794 Unchecked, 11.2s Time] [2021-11-25 18:24:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-11-25 18:24:10,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2021-11-25 18:24:10,234 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 18:24:10,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 924 transitions. [2021-11-25 18:24:10,237 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 924 transitions. Word has length 46 [2021-11-25 18:24:10,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:10,237 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 924 transitions. [2021-11-25 18:24:10,238 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 18:24:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 924 transitions. [2021-11-25 18:24:10,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 18:24:10,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:10,239 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 18:24:10,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:24:10,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:24:10,460 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 18:24:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash 930438946, now seen corresponding path program 1 times [2021-11-25 18:24:10,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:10,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397744096] [2021-11-25 18:24:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:10,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:10,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:24:10,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814791500] [2021-11-25 18:24:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:10,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:24:10,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:24:10,507 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:24:10,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c0baa9-db81-4981-a335-ebfcccbec7dd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:24:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:10,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:24:10,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:24:11,085 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 18:24:11,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:24:11,245 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 18:24:11,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:11,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397744096] [2021-11-25 18:24:11,245 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:24:11,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814791500] [2021-11-25 18:24:11,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814791500] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:24:11,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1362648002] [2021-11-25 18:24:11,249 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-25 18:24:11,249 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:24:11,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:24:11,250 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:24:11,250 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:24:11,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,300 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 18:24:11,301 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 18:24:11,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:11,335 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-25 18:24:11,336 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 18:24:11,345 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 18:24:11,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,357 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 18:24:11,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,375 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 18:24:11,381 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 18:24:11,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,398 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 18:24:11,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,449 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:24:11,449 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 18:24:11,458 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 18:24:11,464 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 18:24:11,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,534 INFO L354 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2021-11-25 18:24:11,534 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 18:24:11,564 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 18:24:11,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:11,606 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 18:24:11,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,756 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-25 18:24:11,757 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 18:24:11,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:11,831 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 18:24:11,832 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 18:24:11,851 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 18:24:11,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 18:24:11,938 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 18:24:11,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 18:24:11,963 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 18:24:12,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,403 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 18:24:12,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,423 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 18:24:12,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,438 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 18:24:12,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,449 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 18:24:12,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,490 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 18:24:12,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,502 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 18:24:12,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,531 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 18:24:12,651 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 18:24:12,654 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 18:24:12,657 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 18:24:12,675 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 18:24:12,679 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 18:24:12,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,718 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 18:24:12,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,729 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 18:24:12,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,748 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 18:24:12,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,885 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 18:24:12,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,903 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 18:24:12,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:12,914 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 18:24:12,961 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 18:24:12,971 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 18:24:12,987 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 18:24:13,069 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 18:24:13,073 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 18:24:13,081 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 18:24:13,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:13,109 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 18:24:13,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:13,117 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 18:24:13,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:13,125 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 18:24:13,150 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 18:24:13,155 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 18:24:13,160 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 18:24:13,210 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 18:24:13,218 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 18:24:13,305 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 18:24:13,314 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 18:24:14,843 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-25 18:24:14,843 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 18:24:14,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:16,353 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-25 18:24:16,353 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 18:24:16,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:17,966 INFO L354 Elim1Store]: treesize reduction 1060, result has 37.8 percent of original size [2021-11-25 18:24:17,966 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 18:24:18,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:18,253 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-25 18:24:18,254 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 18:24:18,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:18,468 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:18,469 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