./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/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_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/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_3808bee3-43ac-4cd3-b446-af3ffee98828/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 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:06:11,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:06:11,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:06:11,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:06:11,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:06:11,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:06:11,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:06:11,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:06:11,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:06:11,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:06:11,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:06:11,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:06:11,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:06:11,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:06:11,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:06:11,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:06:11,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:06:11,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:06:11,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:06:11,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:06:11,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:06:11,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:06:11,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:06:11,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:06:11,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:06:11,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:06:11,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:06:11,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:06:11,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:06:11,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:06:11,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:06:11,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:06:11,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:06:11,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:06:11,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:06:11,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:06:11,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:06:11,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:06:11,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:06:11,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:06:11,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:06:11,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 20:06:11,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:06:11,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:06:11,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:06:11,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:06:11,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:06:11,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:06:11,671 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:06:11,671 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:06:11,672 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:06:11,672 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:06:11,672 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:06:11,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:06:11,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:06:11,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:06:11,673 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:06:11,674 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:06:11,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:06:11,674 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:06:11,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:06:11,675 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:06:11,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:06:11,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:06:11,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:06:11,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:06:11,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:06:11,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:06:11,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:06:11,677 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 20:06:11,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:06:11,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:06:11,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:06:11,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:06:11,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:06:11,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:06:11,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:06:11,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:06:11,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:06:11,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:06:11,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:06:11,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:06:11,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:06:11,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:06:11,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:06:11,681 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_3808bee3-43ac-4cd3-b446-af3ffee98828/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2021-11-25 20:06:11,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:06:11,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:06:11,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:06:11,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:06:12,000 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:06:12,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2021-11-25 20:06:12,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/data/f8380abfd/f7f7db99758e43e79d1c52f407497d1a/FLAG8b8361a41 [2021-11-25 20:06:12,686 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:06:12,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2021-11-25 20:06:12,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/data/f8380abfd/f7f7db99758e43e79d1c52f407497d1a/FLAG8b8361a41 [2021-11-25 20:06:12,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/data/f8380abfd/f7f7db99758e43e79d1c52f407497d1a [2021-11-25 20:06:12,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:06:12,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:06:12,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:06:12,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:06:12,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:06:12,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:06:12" (1/1) ... [2021-11-25 20:06:12,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196e92ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:12, skipping insertion in model container [2021-11-25 20:06:12,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:06:12" (1/1) ... [2021-11-25 20:06:12,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:06:13,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:06:13,654 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_3808bee3-43ac-4cd3-b446-af3ffee98828/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2021-11-25 20:06:13,669 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_3808bee3-43ac-4cd3-b446-af3ffee98828/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2021-11-25 20:06:13,787 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_3808bee3-43ac-4cd3-b446-af3ffee98828/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2021-11-25 20:06:13,788 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_3808bee3-43ac-4cd3-b446-af3ffee98828/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2021-11-25 20:06:13,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:06:13,802 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:06:13,852 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_3808bee3-43ac-4cd3-b446-af3ffee98828/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2021-11-25 20:06:13,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2021-11-25 20:06:13,952 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_3808bee3-43ac-4cd3-b446-af3ffee98828/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2021-11-25 20:06:13,953 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_3808bee3-43ac-4cd3-b446-af3ffee98828/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2021-11-25 20:06:13,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:06:14,049 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:06:14,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14 WrapperNode [2021-11-25 20:06:14,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:06:14,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:06:14,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:06:14,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:06:14,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14" (1/1) ... [2021-11-25 20:06:14,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14" (1/1) ... [2021-11-25 20:06:14,209 INFO L137 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1050 [2021-11-25 20:06:14,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:06:14,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:06:14,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:06:14,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:06:14,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14" (1/1) ... [2021-11-25 20:06:14,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14" (1/1) ... [2021-11-25 20:06:14,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14" (1/1) ... [2021-11-25 20:06:14,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14" (1/1) ... [2021-11-25 20:06:14,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14" (1/1) ... [2021-11-25 20:06:14,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14" (1/1) ... [2021-11-25 20:06:14,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14" (1/1) ... [2021-11-25 20:06:14,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:06:14,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:06:14,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:06:14,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:06:14,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14" (1/1) ... [2021-11-25 20:06:14,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:06:14,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:06:14,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:06:14,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:06:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:06:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 20:06:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:06:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:06:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-25 20:06:14,463 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-25 20:06:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:06:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:06:14,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:06:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:06:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:06:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:06:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-25 20:06:14,464 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-25 20:06:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:06:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-25 20:06:14,464 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-25 20:06:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:06:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:06:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:06:14,800 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:06:14,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:06:15,767 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:06:16,149 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:06:16,150 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-25 20:06:16,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:06:16 BoogieIcfgContainer [2021-11-25 20:06:16,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:06:16,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:06:16,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:06:16,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:06:16,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:06:12" (1/3) ... [2021-11-25 20:06:16,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61fb5d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:06:16, skipping insertion in model container [2021-11-25 20:06:16,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:06:14" (2/3) ... [2021-11-25 20:06:16,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61fb5d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:06:16, skipping insertion in model container [2021-11-25 20:06:16,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:06:16" (3/3) ... [2021-11-25 20:06:16,168 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2021-11-25 20:06:16,174 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:06:16,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-25 20:06:16,235 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:06:16,250 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 20:06:16,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-25 20:06:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-25 20:06:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 20:06:16,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:16,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 20:06:16,282 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 20:06:16,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:16,293 INFO L85 PathProgramCache]: Analyzing trace with hash 27392344, now seen corresponding path program 1 times [2021-11-25 20:06:16,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:16,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399377607] [2021-11-25 20:06:16,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:16,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:16,428 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:06:16,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395185417] [2021-11-25 20:06:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:16,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:16,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:06:16,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:06:16,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:06:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:16,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 20:06:16,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:06:16,761 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 20:06:16,763 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 20:06:16,775 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 20:06:16,788 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 20:06:17,002 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:06:17,015 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 20:06:17,027 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 20:06:17,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:17,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 20:06:17,096 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 20:06:17,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:06:17,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:17,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399377607] [2021-11-25 20:06:17,097 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:06:17,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395185417] [2021-11-25 20:06:17,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395185417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:06:17,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:06:17,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:06:17,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367933851] [2021-11-25 20:06:17,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:06:17,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:06:17,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:06:17,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:06:17,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:06:17,150 INFO L87 Difference]: Start difference. First operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:06:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:19,336 INFO L93 Difference]: Finished difference Result 376 states and 608 transitions. [2021-11-25 20:06:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:06:19,339 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 20:06:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:19,348 INFO L225 Difference]: With dead ends: 376 [2021-11-25 20:06:19,349 INFO L226 Difference]: Without dead ends: 206 [2021-11-25 20:06:19,352 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 20:06:19,355 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 64 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:19,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 420 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 20:06:19,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-25 20:06:19,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 153. [2021-11-25 20:06:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 125 states have (on average 1.256) internal successors, (157), 139 states have internal predecessors, (157), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 20:06:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2021-11-25 20:06:19,422 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 4 [2021-11-25 20:06:19,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:19,422 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2021-11-25 20:06:19,423 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 20:06:19,423 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2021-11-25 20:06:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 20:06:19,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:19,424 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 20:06:19,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:06:19,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 20:06:19,634 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 20:06:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash -646465482, now seen corresponding path program 1 times [2021-11-25 20:06:19,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:19,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448833242] [2021-11-25 20:06:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:19,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:19,673 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:06:19,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777553651] [2021-11-25 20:06:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:19,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:19,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:06:19,674 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:06:19,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:06:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:19,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:06:19,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:06:19,995 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 20:06:19,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:06:19,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:19,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448833242] [2021-11-25 20:06:19,996 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:06:19,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777553651] [2021-11-25 20:06:19,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777553651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:06:19,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:06:19,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:06:19,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152764551] [2021-11-25 20:06:19,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:06:19,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:06:19,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:06:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:06:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:06:20,000 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:06:21,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:21,649 INFO L93 Difference]: Finished difference Result 261 states and 302 transitions. [2021-11-25 20:06:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:06:21,652 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 20:06:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:21,654 INFO L225 Difference]: With dead ends: 261 [2021-11-25 20:06:21,655 INFO L226 Difference]: Without dead ends: 259 [2021-11-25 20:06:21,655 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 20:06:21,657 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 106 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:21,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 443 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:06:21,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-25 20:06:21,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 249. [2021-11-25 20:06:21,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 216 states have (on average 1.25) internal successors, (270), 231 states have internal predecessors, (270), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-25 20:06:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2021-11-25 20:06:21,680 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 18 [2021-11-25 20:06:21,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:21,681 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2021-11-25 20:06:21,681 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 20:06:21,681 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2021-11-25 20:06:21,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 20:06:21,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:21,682 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 20:06:21,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:06:21,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:21,906 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 20:06:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1434406572, now seen corresponding path program 1 times [2021-11-25 20:06:21,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:21,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84006712] [2021-11-25 20:06:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:21,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:21,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:06:21,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064218276] [2021-11-25 20:06:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:21,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:21,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:06:21,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:06:21,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:06:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:22,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:06:22,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:06:22,190 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 20:06:22,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:06:22,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:22,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84006712] [2021-11-25 20:06:22,191 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:06:22,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064218276] [2021-11-25 20:06:22,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064218276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:06:22,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:06:22,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:06:22,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190840950] [2021-11-25 20:06:22,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:06:22,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:06:22,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:06:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:06:22,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:06:22,194 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:06:24,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:06:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:24,471 INFO L93 Difference]: Finished difference Result 441 states and 532 transitions. [2021-11-25 20:06:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:06:24,476 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 20:06:24,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:24,479 INFO L225 Difference]: With dead ends: 441 [2021-11-25 20:06:24,479 INFO L226 Difference]: Without dead ends: 439 [2021-11-25 20:06:24,480 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 20:06:24,482 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 147 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:24,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 451 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 20:06:24,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-25 20:06:24,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 428. [2021-11-25 20:06:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 384 states have (on average 1.25) internal successors, (480), 400 states have internal predecessors, (480), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-11-25 20:06:24,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 529 transitions. [2021-11-25 20:06:24,516 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 529 transitions. Word has length 19 [2021-11-25 20:06:24,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:24,517 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 529 transitions. [2021-11-25 20:06:24,517 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 20:06:24,517 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 529 transitions. [2021-11-25 20:06:24,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 20:06:24,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:24,519 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 20:06:24,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:06:24,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:24,746 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 20:06:24,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:24,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1558573003, now seen corresponding path program 1 times [2021-11-25 20:06:24,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:24,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680236173] [2021-11-25 20:06:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:24,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:24,852 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 20:06:24,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:24,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680236173] [2021-11-25 20:06:24,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680236173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:06:24,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:06:24,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:06:24,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654287335] [2021-11-25 20:06:24,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:06:24,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:06:24,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:06:24,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:06:24,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:06:24,856 INFO L87 Difference]: Start difference. First operand 428 states and 529 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:06:26,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:26,868 INFO L93 Difference]: Finished difference Result 682 states and 842 transitions. [2021-11-25 20:06:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:06:26,872 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 20:06:26,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:26,876 INFO L225 Difference]: With dead ends: 682 [2021-11-25 20:06:26,876 INFO L226 Difference]: Without dead ends: 562 [2021-11-25 20:06:26,877 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 20:06:26,878 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 56 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:26,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 412 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 20:06:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-25 20:06:26,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 428. [2021-11-25 20:06:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 384 states have (on average 1.2473958333333333) internal successors, (479), 400 states have internal predecessors, (479), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-11-25 20:06:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 528 transitions. [2021-11-25 20:06:26,910 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 528 transitions. Word has length 24 [2021-11-25 20:06:26,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:26,910 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 528 transitions. [2021-11-25 20:06:26,910 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 20:06:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 528 transitions. [2021-11-25 20:06:26,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 20:06:26,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:26,912 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 20:06:26,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:06:26,912 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 20:06:26,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:26,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2115465486, now seen corresponding path program 1 times [2021-11-25 20:06:26,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:26,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858585051] [2021-11-25 20:06:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:26,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:26,939 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:06:26,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852474034] [2021-11-25 20:06:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:26,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:26,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:06:26,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:06:26,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:06:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:27,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:06:27,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:06:27,256 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 20:06:27,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:06:27,256 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:27,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858585051] [2021-11-25 20:06:27,257 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:06:27,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852474034] [2021-11-25 20:06:27,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852474034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:06:27,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:06:27,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 20:06:27,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398069215] [2021-11-25 20:06:27,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:06:27,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:06:27,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:06:27,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:06:27,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:06:27,259 INFO L87 Difference]: Start difference. First operand 428 states and 528 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 20:06:28,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:28,586 INFO L93 Difference]: Finished difference Result 454 states and 548 transitions. [2021-11-25 20:06:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:06:28,592 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 20:06:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:28,596 INFO L225 Difference]: With dead ends: 454 [2021-11-25 20:06:28,596 INFO L226 Difference]: Without dead ends: 453 [2021-11-25 20:06:28,597 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 20:06:28,598 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 112 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:28,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 304 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:06:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-25 20:06:28,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 443. [2021-11-25 20:06:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 394 states have (on average 1.2436548223350254) internal successors, (490), 411 states have internal predecessors, (490), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-11-25 20:06:28,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 545 transitions. [2021-11-25 20:06:28,633 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 545 transitions. Word has length 27 [2021-11-25 20:06:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:28,633 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 545 transitions. [2021-11-25 20:06:28,634 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 20:06:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 545 transitions. [2021-11-25 20:06:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 20:06:28,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:28,640 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 20:06:28,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:06:28,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:28,853 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 20:06:28,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:28,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1154920565, now seen corresponding path program 1 times [2021-11-25 20:06:28,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:28,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271087226] [2021-11-25 20:06:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:28,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:28,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:06:28,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132040297] [2021-11-25 20:06:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:28,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:28,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:06:28,886 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:06:28,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:06:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:29,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:06:29,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:06:29,190 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 20:06:29,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:06:29,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:29,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271087226] [2021-11-25 20:06:29,191 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:06:29,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132040297] [2021-11-25 20:06:29,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132040297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:06:29,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:06:29,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 20:06:29,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784147743] [2021-11-25 20:06:29,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:06:29,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:06:29,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:06:29,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:06:29,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:06:29,195 INFO L87 Difference]: Start difference. First operand 443 states and 545 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 20:06:29,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:29,965 INFO L93 Difference]: Finished difference Result 443 states and 545 transitions. [2021-11-25 20:06:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:06:29,970 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 20:06:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:29,973 INFO L225 Difference]: With dead ends: 443 [2021-11-25 20:06:29,974 INFO L226 Difference]: Without dead ends: 442 [2021-11-25 20:06:29,974 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 20:06:29,977 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:29,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 147 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:06:29,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-25 20:06:29,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-11-25 20:06:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 394 states have (on average 1.2385786802030456) internal successors, (488), 410 states have internal predecessors, (488), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-11-25 20:06:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 543 transitions. [2021-11-25 20:06:30,006 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 543 transitions. Word has length 28 [2021-11-25 20:06:30,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:30,007 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 543 transitions. [2021-11-25 20:06:30,008 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 20:06:30,008 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 543 transitions. [2021-11-25 20:06:30,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 20:06:30,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:30,009 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 20:06:30,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:06:30,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 20:06:30,226 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 20:06:30,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:30,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1356353724, now seen corresponding path program 1 times [2021-11-25 20:06:30,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:30,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422686162] [2021-11-25 20:06:30,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:30,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:30,335 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:06:30,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349278887] [2021-11-25 20:06:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:30,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:30,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:06:30,344 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:06:30,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:06:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:30,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:06:30,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:06:31,020 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 20:06:31,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:06:31,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:31,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422686162] [2021-11-25 20:06:31,021 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:06:31,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349278887] [2021-11-25 20:06:31,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349278887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:06:31,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:06:31,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:06:31,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761338971] [2021-11-25 20:06:31,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:06:31,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:06:31,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:06:31,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:06:31,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:06:31,023 INFO L87 Difference]: Start difference. First operand 442 states and 543 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:06:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:32,574 INFO L93 Difference]: Finished difference Result 814 states and 992 transitions. [2021-11-25 20:06:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:06:32,579 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 20:06:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:32,582 INFO L225 Difference]: With dead ends: 814 [2021-11-25 20:06:32,582 INFO L226 Difference]: Without dead ends: 377 [2021-11-25 20:06:32,584 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 20:06:32,585 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 49 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:32,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 284 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 20:06:32,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-25 20:06:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2021-11-25 20:06:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 326 states have (on average 1.2147239263803682) internal successors, (396), 341 states have internal predecessors, (396), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2021-11-25 20:06:32,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 441 transitions. [2021-11-25 20:06:32,624 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 441 transitions. Word has length 28 [2021-11-25 20:06:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:32,627 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 441 transitions. [2021-11-25 20:06:32,627 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 20:06:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 441 transitions. [2021-11-25 20:06:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 20:06:32,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:32,632 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 20:06:32,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:06:32,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 20:06:32,854 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 20:06:32,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash 227049609, now seen corresponding path program 1 times [2021-11-25 20:06:32,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:32,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534228964] [2021-11-25 20:06:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:32,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:32,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:06:32,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545788273] [2021-11-25 20:06:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:32,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:32,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:06:32,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:06:32,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:06:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:33,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 20:06:33,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:06:33,341 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 20:06:33,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:06:33,536 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 20:06:33,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:33,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534228964] [2021-11-25 20:06:33,537 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:06:33,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545788273] [2021-11-25 20:06:33,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545788273] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:06:33,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [943753692] [2021-11-25 20:06:33,555 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 20:06:33,555 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:06:33,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:06:33,565 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:06:33,565 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:06:33,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,658 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 20:06:33,658 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 20:06:33,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,678 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 20:06:33,687 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 20:06:33,697 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 20:06:33,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,707 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 20:06:33,717 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 20:06:33,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,830 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 20:06:33,830 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 20:06:33,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,861 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 20:06:33,872 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 20:06:33,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:33,889 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 20:06:33,905 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 20:06:33,918 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 20:06:34,008 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 20:06:34,018 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 20:06:34,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,039 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 20:06:34,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,059 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 20:06:34,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 20:06:34,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,545 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 20:06:34,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,573 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 20:06:34,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,592 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 20:06:34,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,617 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 20:06:34,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 20:06:34,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,716 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 20:06:34,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,736 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 20:06:34,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,767 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 20:06:34,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,804 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 20:06:34,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,837 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 20:06:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:34,859 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 20:06:34,982 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 20:06:34,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-25 20:06:34,991 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 20:06:35,007 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 20:06:35,012 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 20:06:35,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,109 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 20:06:35,123 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 20:06:35,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,144 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 20:06:35,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,161 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 20:06:35,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,178 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 20:06:35,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,194 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 20:06:35,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,211 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 20:06:35,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,361 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 20:06:35,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,377 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 20:06:35,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,391 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 20:06:35,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,410 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 20:06:35,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,430 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 20:06:35,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:35,451 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 20:06:35,463 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 20:06:35,539 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 20:06:35,551 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 20:06:35,559 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 20:06:35,773 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 56 for LOIs [2021-11-25 20:06:35,866 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 129 for LOIs [2021-11-25 20:06:36,197 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:06:40,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [943753692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:06:40,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:06:40,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [6, 7] total 32 [2021-11-25 20:06:40,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133653639] [2021-11-25 20:06:40,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:06:40,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 20:06:40,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:06:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 20:06:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:06:40,144 INFO L87 Difference]: Start difference. First operand 368 states and 441 transitions. Second operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 20:06:45,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:06:47,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:06:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:47,615 INFO L93 Difference]: Finished difference Result 725 states and 872 transitions. [2021-11-25 20:06:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:06:47,615 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 20:06:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:47,618 INFO L225 Difference]: With dead ends: 725 [2021-11-25 20:06:47,618 INFO L226 Difference]: Without dead ends: 365 [2021-11-25 20:06:47,620 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 20:06:47,621 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 9 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 438 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:47,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1372 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 649 Invalid, 0 Unknown, 438 Unchecked, 7.4s Time] [2021-11-25 20:06:47,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-25 20:06:47,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2021-11-25 20:06:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 323 states have (on average 1.2105263157894737) internal successors, (391), 337 states have internal predecessors, (391), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2021-11-25 20:06:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 436 transitions. [2021-11-25 20:06:47,642 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 436 transitions. Word has length 34 [2021-11-25 20:06:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:47,642 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 436 transitions. [2021-11-25 20:06:47,642 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 20:06:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 436 transitions. [2021-11-25 20:06:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 20:06:47,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:47,643 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 20:06:47,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 20:06:47,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:47,857 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 20:06:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1472683514, now seen corresponding path program 1 times [2021-11-25 20:06:47,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:47,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912811417] [2021-11-25 20:06:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:47,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:47,899 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:06:47,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231858400] [2021-11-25 20:06:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:47,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:47,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:06:47,901 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:06:47,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 20:06:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:48,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:06:48,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:06:48,344 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 20:06:48,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:06:48,368 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:48,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912811417] [2021-11-25 20:06:48,369 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:06:48,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231858400] [2021-11-25 20:06:48,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231858400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:06:48,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:06:48,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:06:48,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265609528] [2021-11-25 20:06:48,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:06:48,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:06:48,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:06:48,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:06:48,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:06:48,371 INFO L87 Difference]: Start difference. First operand 365 states and 436 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 20:06:49,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:06:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:51,214 INFO L93 Difference]: Finished difference Result 664 states and 802 transitions. [2021-11-25 20:06:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:06:51,214 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 20:06:51,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:51,218 INFO L225 Difference]: With dead ends: 664 [2021-11-25 20:06:51,219 INFO L226 Difference]: Without dead ends: 662 [2021-11-25 20:06:51,219 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 20:06:51,220 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 151 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:51,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 678 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-25 20:06:51,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-11-25 20:06:51,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 650. [2021-11-25 20:06:51,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 593 states have (on average 1.2107925801011805) internal successors, (718), 607 states have internal predecessors, (718), 33 states have call successors, (33), 15 states have call predecessors, (33), 11 states have return successors, (44), 27 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-25 20:06:51,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 795 transitions. [2021-11-25 20:06:51,253 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 795 transitions. Word has length 37 [2021-11-25 20:06:51,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:51,254 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 795 transitions. [2021-11-25 20:06:51,254 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 20:06:51,254 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 795 transitions. [2021-11-25 20:06:51,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-25 20:06:51,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:51,255 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 20:06:51,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:06:51,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:51,470 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 20:06:51,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1507787838, now seen corresponding path program 1 times [2021-11-25 20:06:51,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:51,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610347342] [2021-11-25 20:06:51,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:51,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:51,517 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:06:51,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812866847] [2021-11-25 20:06:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:51,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:51,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:06:51,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:06:51,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 20:06:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:51,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:06:51,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:06:52,028 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 20:06:52,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:06:52,189 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 20:06:52,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:52,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610347342] [2021-11-25 20:06:52,190 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:06:52,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812866847] [2021-11-25 20:06:52,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812866847] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:06:52,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1693519882] [2021-11-25 20:06:52,193 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-25 20:06:52,193 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:06:52,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:06:52,193 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:06:52,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:06:52,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:06:52,241 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-25 20:06:52,242 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 20:06:52,249 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 20:06:52,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 20:06:52,267 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 20:06:52,278 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:06:52,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-11-25 20:06:52,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,336 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 20:06:52,336 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 20:06:52,343 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 20:06:52,349 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 20:06:52,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,361 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 20:06:52,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,458 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 20:06:52,459 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 20:06:52,473 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 20:06:52,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2021-11-25 20:06:52,504 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 20:06:52,518 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 20:06:52,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,531 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 20:06:52,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 114 [2021-11-25 20:06:52,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:52,642 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 20:06:52,661 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 20:06:52,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 20:06:53,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,080 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 20:06:53,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,106 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 20:06:53,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2021-11-25 20:06:53,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,161 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 20:06:53,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 128 [2021-11-25 20:06:53,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,205 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 20:06:53,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 141 [2021-11-25 20:06:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 139 [2021-11-25 20:06:53,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,338 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 20:06:53,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,367 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 20:06:53,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,396 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 20:06:53,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,418 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 20:06:53,579 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 20:06:53,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-25 20:06:53,586 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 20:06:53,621 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 20:06:53,626 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 20:06:53,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 110 [2021-11-25 20:06:53,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2021-11-25 20:06:53,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,747 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 20:06:53,776 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 20:06:53,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,792 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 20:06:53,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 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 20:06:53,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,820 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 20:06:53,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:53,836 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 20:06:54,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,043 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 20:06:54,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,057 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 20:06:54,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 110 [2021-11-25 20:06:54,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2021-11-25 20:06:54,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,106 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 20:06:54,130 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 20:06:54,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,146 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 20:06:54,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:54,163 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 20:06:54,288 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 20:06:54,311 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 20:06:54,333 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 20:06:55,487 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 80 for LOIs [2021-11-25 20:06:55,582 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 138 for LOIs [2021-11-25 20:06:56,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2021-11-25 20:06:56,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2021-11-25 20:06:56,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:56,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:56,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 122 [2021-11-25 20:06:56,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2021-11-25 20:06:56,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:56,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:56,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 122 [2021-11-25 20:06:56,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2021-11-25 20:06:57,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:57,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:06:57,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 127 [2021-11-25 20:06:57,270 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 20:06:57,288 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 20:06:57,453 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 130 for LOIs [2021-11-25 20:06:57,568 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:07:03,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1693519882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:03,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:07:03,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 5] total 31 [2021-11-25 20:07:03,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025530422] [2021-11-25 20:07:03,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:03,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 20:07:03,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:03,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 20:07:03,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-25 20:07:03,307 INFO L87 Difference]: Start difference. First operand 650 states and 795 transitions. Second operand has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 20:07:06,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:07:09,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:07:11,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:07:12,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:07:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:13,748 INFO L93 Difference]: Finished difference Result 1272 states and 1563 transitions. [2021-11-25 20:07:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:07:13,749 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 20:07:13,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:13,753 INFO L225 Difference]: With dead ends: 1272 [2021-11-25 20:07:13,754 INFO L226 Difference]: Without dead ends: 652 [2021-11-25 20:07:13,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-25 20:07:13,756 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 9 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 645 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:13,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1533 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 700 Invalid, 1 Unknown, 645 Unchecked, 10.4s Time] [2021-11-25 20:07:13,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-25 20:07:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2021-11-25 20:07:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 595 states have (on average 1.2100840336134453) internal successors, (720), 609 states have internal predecessors, (720), 33 states have call successors, (33), 15 states have call predecessors, (33), 11 states have return successors, (44), 27 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-25 20:07:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 797 transitions. [2021-11-25 20:07:13,792 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 797 transitions. Word has length 46 [2021-11-25 20:07:13,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:13,793 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 797 transitions. [2021-11-25 20:07:13,793 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 20:07:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 797 transitions. [2021-11-25 20:07:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 20:07:13,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:13,794 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 20:07:13,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 20:07:14,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 20:07:14,022 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 20:07:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2074882063, now seen corresponding path program 1 times [2021-11-25 20:07:14,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:14,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912848504] [2021-11-25 20:07:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:14,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:14,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:07:14,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485234124] [2021-11-25 20:07:14,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:14,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:07:14,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:07:14,055 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:07:14,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3808bee3-43ac-4cd3-b446-af3ffee98828/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 20:07:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:14,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:07:14,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:07:14,605 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 20:07:14,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:07:14,779 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 20:07:14,779 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:14,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912848504] [2021-11-25 20:07:14,779 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:07:14,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485234124] [2021-11-25 20:07:14,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485234124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:07:14,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [561426684] [2021-11-25 20:07:14,783 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-25 20:07:14,783 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:07:14,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:07:14,783 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:07:14,784 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:07:14,807 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 20:07:14,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:14,848 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 20:07:14,848 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 20:07:14,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:14,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:14,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 20:07:14,872 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 20:07:14,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:14,881 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 20:07:14,894 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 20:07:14,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:14,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:14,963 INFO L354 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2021-11-25 20:07:14,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 65 [2021-11-25 20:07:15,012 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 20:07:15,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:07:15,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-11-25 20:07:15,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,115 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-25 20:07:15,115 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 20:07:15,129 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 20:07:15,141 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 20:07:15,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,209 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-25 20:07:15,209 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 20:07:15,264 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 20:07:15,282 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 20:07:15,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 20:07:15,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,674 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 20:07:15,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,690 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 20:07:15,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,710 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 20:07:15,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,721 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 20:07:15,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,767 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 20:07:15,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,781 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 20:07:15,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:15,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 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 20:07:15,948 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 20:07:15,952 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 20:07:15,955 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 20:07:15,973 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 20:07:15,977 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 20:07:16,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,019 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 20:07:16,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,031 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 20:07:16,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,052 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 20:07:16,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,190 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 20:07:16,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,209 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 20:07:16,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,221 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 20:07:16,268 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 20:07:16,282 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 20:07:16,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 20:07:16,358 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 20:07:16,363 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 20:07:16,369 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 20:07:16,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,396 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 20:07:16,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,405 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 20:07:16,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:16,414 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 20:07:16,439 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 20:07:16,444 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 20:07:16,450 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 20:07:16,497 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 20:07:16,506 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 20:07:16,591 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 20:07:16,600 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 20:07:18,125 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-25 20:07:18,126 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 20:07:18,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:19,480 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-25 20:07:19,481 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 20:07:19,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:21,153 INFO L354 Elim1Store]: treesize reduction 1060, result has 37.8 percent of original size [2021-11-25 20:07:21,154 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 20:07:21,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:21,442 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-25 20:07:21,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 30 [2021-11-25 20:07:21,475 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:21,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:21,586 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:07:21,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 63 [2021-11-25 20:07:21,632 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:21,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:21,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2021-11-25 20:07:21,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:21,782 INFO L354 Elim1Store]: treesize reduction 11, result has 56.0 percent of original size [2021-11-25 20:07:21,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 44 [2021-11-25 20:07:21,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:21,897 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-11-25 20:07:21,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-11-25 20:07:21,948 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:21,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:07:21,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:21,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 20:07:22,052 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:22,101 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:22,177 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:22,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:22,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2021-11-25 20:07:22,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:26,028 INFO L354 Elim1Store]: treesize reduction 1396, result has 19.4 percent of original size [2021-11-25 20:07:26,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 4880 treesize of output 3839 [2021-11-25 20:07:26,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:28,156 INFO L354 Elim1Store]: treesize reduction 1100, result has 26.4 percent of original size [2021-11-25 20:07:28,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 11 new quantified variables, introduced 25 case distinctions, treesize of input 4924 treesize of output 3565 [2021-11-25 20:07:46,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:46,801 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:46,985 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:47,155 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:47,217 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:47,315 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:47,416 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:47,575 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:47,618 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:47,686 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:47,717 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:47,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:47,776 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:47,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:07:47,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:47,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:47,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:47,914 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 169 treesize of output 147 [2021-11-25 20:07:48,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:48,162 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:48,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:48,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:48,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:48,222 INFO L354 Elim1Store]: treesize reduction 172, result has 0.6 percent of original size [2021-11-25 20:07:48,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 913 treesize of output 863 [2021-11-25 20:07:48,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:07:48,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:48,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:48,507 INFO L354 Elim1Store]: treesize reduction 116, result has 43.4 percent of original size [2021-11-25 20:07:48,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 446 treesize of output 486 [2021-11-25 20:07:49,571 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:50,211 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:50,235 WARN L220 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:07:50,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:50,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:50,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:50,359 INFO L354 Elim1Store]: treesize reduction 216, result has 0.5 percent of original size [2021-11-25 20:07:50,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 3730 treesize of output 3652 [2021-11-25 20:07:51,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:51,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:51,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:51,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:51,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:51,993 INFO L354 Elim1Store]: treesize reduction 140, result has 28.2 percent of original size [2021-11-25 20:07:51,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 396 treesize of output 394 [2021-11-25 20:07:52,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,303 INFO L354 Elim1Store]: treesize reduction 94, result has 51.8 percent of original size [2021-11-25 20:07:52,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 474 treesize of output 514 [2021-11-25 20:07:52,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:07:52,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:52,688 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:07:52,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 1344 treesize of output 1296 [2021-11-25 20:07:53,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:53,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:53,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:07:53,649 INFO L354 Elim1Store]: treesize reduction 184, result has 45.4 percent of original size [2021-11-25 20:07:53,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 24 case distinctions, treesize of input 3739 treesize of output 3807 [2021-11-25 20:08:42,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:08:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:08:42,791 INFO L354 Elim1Store]: treesize reduction 113, result has 64.8 percent of original size [2021-11-25 20:08:42,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 455 treesize of output 608 [2021-11-25 20:09:26,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:26,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:26,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:26,918 INFO L354 Elim1Store]: treesize reduction 27, result has 58.5 percent of original size [2021-11-25 20:09:26,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 178 treesize of output 187 [2021-11-25 20:09:27,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:09:27,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:27,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:27,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:27,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:27,762 INFO L354 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2021-11-25 20:09:27,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 172 treesize of output 166 [2021-11-25 20:09:27,878 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:09:27,942 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:09:28,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:09:28,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:28,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:28,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:28,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:28,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:28,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:09:28,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 20:09:28,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:28,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:28,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:28,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:28,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:28,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:09:28,316 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 20:09:28,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 1 [2021-11-25 20:09:29,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:29,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:29,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:29,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 147 [2021-11-25 20:09:29,381 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:09:29,482 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:09:29,913 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:09:30,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:30,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:30,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:30,145 INFO L354 Elim1Store]: treesize reduction 278, result has 0.4 percent of original size [2021-11-25 20:09:30,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 922 treesize of output 866 [2021-11-25 20:09:30,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:30,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:30,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:30,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:09:30,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:30,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:30,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:09:30,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:30,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:30,507 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-11-25 20:09:30,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 1600 treesize of output 1542 [2021-11-25 20:09:31,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:31,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:31,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:31,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:31,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:09:31,856 INFO L354 Elim1Store]: treesize reduction 194, result has 0.5 percent of original size [2021-11-25 20:09:31,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 734 treesize of output 670 [2021-11-25 20:09:45,414 WARN L220 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:10:30,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:30,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:30,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:30,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 619 treesize of output 599 [2021-11-25 20:10:31,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:31,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:31,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:31,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 147 [2021-11-25 20:10:31,226 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:10:31,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:31,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:31,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:31,842 INFO L354 Elim1Store]: treesize reduction 172, result has 0.6 percent of original size [2021-11-25 20:10:31,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 913 treesize of output 863 [2021-11-25 20:10:32,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:32,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:32,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:32,078 INFO L354 Elim1Store]: treesize reduction 176, result has 0.6 percent of original size [2021-11-25 20:10:32,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 446 treesize of output 398 [2021-11-25 20:10:32,244 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:10:32,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:32,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:32,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:32,581 INFO L354 Elim1Store]: treesize reduction 216, result has 0.5 percent of original size [2021-11-25 20:10:32,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 3730 treesize of output 3652 [2021-11-25 20:11:17,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:11:17,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:11:17,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:11:17,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:11:17,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:11:17,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:11:19,150 INFO L354 Elim1Store]: treesize reduction 616, result has 41.7 percent of original size [2021-11-25 20:11:19,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 6 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 83 case distinctions, treesize of input 226889 treesize of output 218677 [2021-11-25 20:17:49,431 WARN L227 SmtUtils]: Spent 7.48s on a formula simplification that was a NOOP. DAG size: 3464 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)